Add basic travis-ci integration
Add basic travis-ci integration

This PR adds the basic integration for [Travis CI][tci].

The config file `.travis.yml` tells the server to setup the basic build
system, and run `compile_test.py`. If not all  examples and tests could be
built, then the Travis CI integration adds a warning to "merge" button on
the bottom of the Github page.

Of course this integration makes little sense until #1049 is resolved,
because new bugs and old bugs cannot be told apart. Also (of course)
only because everything still builds, a PR still can intruduce a
multitude of runtime errors.

This integrations is meant to work additionally to our Jenkings. Users
can activate the test in their own RIOT forks to run the test before
opening a PR to master.

  [tci]: https://travis-ci.org/

khhhh/RIOT,immesys/RiSyn,attdona/RIOT,katezilla/RIOT,PSHIVANI/Riot-Code,Josar/RIOT,lebrush/RIOT,Hyungsin/RIOT-OS,JensErdmann/RIOT,rousselk/RIOT,automote/RIOT,phiros/RIOT,TobiasFredersdorf/RIOT,abp719/RIOT,shady33/RIOT,TobiasFredersdorf/RIOT,thiagohd/RIOT,lebrush/RIOT,MarkXYang/RIOT,BytesGalore/PetersRIOT,altairpearl/RIOT,brettswann/RIOT,robixnai/RIOT,x3ro/RIOT,ximus/RIOT,bartfaizoltan/RIOT,rfswarm/RIOT,kushalsingh007/RIOT,BytesGalore/RIOT,phiros/RIOT,RBartz/RIOT,khhhh/RIOT,daniel-k/RIOT,sgso/RIOT,Hyungsin/RIOT-OS,ThanhVic/RIOT,adrianghc/RIOT,emmanuelsearch/RIOT,roberthartung/RIOT,kb2ma/RIOT,immesys/RiSyn,watr-li/RIOT,biboc/RIOT,patkan/RIOT,thomaseichinger/RIOT,DipSwitch/RIOT,abp719/RIOT,neiljay/RIOT,jferreir/RIOT,fnack/RIOT,rfswarm/RIOT,PSHIVANI/Riot-Code,robixnai/RIOT,automote/RIOT,tdautc19841202/RIOT,rousselk/RIOT,RBartz/RIOT,miri64/RIOT,thiagohd/RIOT,syin2/RIOT,rfuentess/RIOT,mfrey/RIOT,A-Paul/RIOT,shady33/RIOT,thiagohd/RIOT,Lexandro92/RIOT-CoAP,abkam07/RIOT,thiagohd/RIOT,Darredevil/RIOT,jhollister/RIOT,Darredevil/RIOT,fnack/RIOT,smlng/RIOT,OTAkeys/RIOT,alignan/RIOT,haoyangyu/RIOT,backenklee/RIOT,marcosalm/RIOT,stevenj/RIOT,MonsterCode8000/RIOT,altairpearl/RIOT,l3nko/RIOT,mtausig/RIOT,locicontrols/RIOT,fnack/RIOT,hamilton-mote/RIOT-OS,Lexandro92/RIOT-CoAP,gautric/RIOT,katezilla/RIOT,sumanpanchal/RIOT,1blankz7/RIOT,BytesGalore/PetersRIOT,miri64/RIOT,ks156/RIOT,bartfaizoltan/RIOT,immesys/RiSyn,koenning/RIOT,Hyungsin/RIOT-OS,stevenj/RIOT,lazytech-org/RIOT,brettswann/RIOT,syin2/RIOT,malosek/RIOT,jferreir/RIOT,roberthartung/RIOT,jfischer-phytec-iot/RIOT,MarkXYang/RIOT,centurysys/RIOT,neiljay/RIOT,OlegHahm/RIOT,wentaoshang/RIOT,BytesGalore/PetersRIOT,ntrtrung/RIOT,ks156/RIOT,immesys/RiSyn,toonst/RIOT,centurysys/RIOT,chris-wood/RIOT,openkosmosorg/RIOT,ThanhVic/RIOT,josephnoir/RIOT,arvindpdmn/RIOT,aeneby/RIOT,Lotterleben/RIOT,josephnoir/RIOT,dkm/RIOT,latsku/RIOT,herrfz/RIOT,marcosalm/RIOT,dkm/RIOT,Ell-i/RIOT,ximus/RIOT,msolters/RIOT,ant9000/RIOT,rajma996/RIOT,Lexandro92/RIOT-CoAP,A-Paul/RIOT,changbiao/RIOT,RIOT-OS/RIOT,backenklee/RIOT,marcosalm/RIOT,kaspar030/RIOT,shady33/RIOT,basilfx/RIOT,backenklee/RIOT,msolters/RIOT,MarkXYang/RIOT,toonst/RIOT,lebrush/RIOT,tdautc19841202/RIOT,dhruvvyas90/RIOT,bartfaizoltan/RIOT,MohmadAyman/RIOT,daniel-k/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,neumodisch/RIOT,brettswann/RIOT,arvindpdmn/RIOT,stevenj/RIOT,Osblouf/RIOT,BytesGalore/PetersRIOT,avmelnikoff/RIOT,ant9000/RIOT,Darredevil/RIOT,syin2/RIOT,l3nko/RIOT,mtausig/RIOT,spium/IoT-RIOT,JensErdmann/RIOT,RIOT-OS/RIOT,A-Paul/RIOT,authmillenon/RIOT,shady33/RIOT,MonsterCode8000/RIOT,fnack/RIOT,MonsterCode8000/RIOT,arvindpdmn/RIOT,roberthartung/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,herrfz/RIOT,RubikonAlpha/RIOT,phiros/RIOT,DipSwitch/RIOT,Ell-i/RIOT,gbarnett/RIOT,roberthartung/RIOT,shady33/RIOT,kushalsingh007/RIOT,josephnoir/RIOT,ntrtrung/RIOT,aeneby/RIOT,neumodisch/RIOT,kb2ma/RIOT,sumanpanchal/RIOT,RubikonAlpha/RIOT,asanka-code/RIOT,BytesGalore/PetersRIOT,EmuxEvans/RIOT,hamilton-mote/RIOT-OS,MarkXYang/RIOT,gbarnett/RIOT,latsku/RIOT,authmillenon/RIOT,sumanpanchal/RIOT,ks156/RIOT,smlng/RIOT,ros2/ros2_embedded_riot,JensErdmann/RIOT,tdautc19841202/RIOT,PSHIVANI/Riot-Code,authmillenon/RIOT,zhuoshuguo/RIOT,Hyungsin/RIOT-OS,DipSwitch/RIOT,beurdouche/RIOT,luciotorre/RIOT,FrancescoErmini/RIOT,MohmadAyman/RIOT,adrianghc/RIOT,rakendrathapa/RIOT,BytesGalore/PetersRIOT,rakendrathapa/RIOT,alex1818/RIOT,rousselk/RIOT,backenklee/RIOT,gebart/RIOT,gebart/RIOT,kbumsik/RIOT,Lotterleben/RIOT,MonsterCode8000/RIOT,tdautc19841202/RIOT,ros2/ros2_embedded_riot,asanka-code/RIOT,OlegHahm/RIOT,kaspar030/RIOT,jferreir/RIOT,d00616/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,adjih/RIOT,x3ro/RIOT,neiljay/RIOT,FrancescoErmini/RIOT,lazytech-org/RIOT,hamilton-mote/RIOT-OS,jferreir/RIOT,A-Paul/RIOT,jfischer-phytec-iot/RIOT,koenning/RIOT,binarylemon/RIOT,1blankz7/RIOT,immesys/RiSyn,gbarnett/RIOT,kushalsingh007/RIOT,kerneltask/RIOT,thomaseichinger/RIOT,cladmi/RIOT,adrianghc/RIOT,rajma996/RIOT,kaleb-himes/RIOT,l3nko/RIOT,malosek/RIOT,MohmadAyman/RIOT,jfischer-phytec-iot/RIOT,jremmert-phytec-iot/RIOT,spium/IoT-RIOT,BytesGalore/RIOT,Josar/RIOT,mtausig/RIOT,haoyangyu/RIOT,robixnai/RIOT,kerneltask/RIOT,MohmadAyman/RIOT,centurysys/RIOT,brettswann/RIOT,rfswarm/RIOT,FrancescoErmini/RIOT,openkosmosorg/RIOT,herrfz/RIOT,PSHIVANI/Riot-Code,d00616/RIOT,changbiao/RIOT,beurdouche/RIOT,luciotorre/RIOT,smlng/RIOT,thiagohd/RIOT,shady33/RIOT,FrancescoErmini/RIOT,josephnoir/RIOT,arvindpdmn/RIOT,Darredevil/RIOT,ximus/RIOT,rfswarm2/RIOT,LudwigOrtmann/RIOT,nsol-nmsu/RIOT,watr-li/RIOT,changbiao/RIOT,jasonatran/RIOT,rfswarm/RIOT,phiros/RIOT,rousselk/RIOT,watr-li/RIOT,malosek/RIOT,rfswarm2/RIOT,toonst/RIOT,ks156/RIOT,Darredevil/RIOT,1blankz7/RIOT,abp719/RIOT,lebrush/RIOT,koenning/RIOT,rajma996/RIOT,biboc/RIOT,alignan/RIOT,Josar/RIOT,ThanhVic/RIOT,LudwigKnuepfer/RIOT,patkan/RIOT,dkm/RIOT,benoit-canet/RIOT,dhruvvyas90/RIOT,yogo1212/RIOT,ros2/ros2_embedded_riot,OlegHahm/RIOT,AnonMall/RIOT,cladmi/RIOT,watr-li/RIOT,ximus/RIOT,Yonezawa-T2/RIOT,tfar/RIOT,abkam07/RIOT,sgso/RIOT,daniel-k/RIOT,kYc0o/RIOT,jfischer-phytec-iot/RIOT,luciotorre/RIOT,DipSwitch/RIOT,sumanpanchal/RIOT,alex1818/RIOT,LudwigKnuepfer/RIOT,kaleb-himes/RIOT,adrianghc/RIOT,kaleb-himes/RIOT,kb2ma/RIOT,Josar/RIOT,jasonatran/RIOT,yogo1212/RIOT,kYc0o/RIOT,gautric/RIOT,mziegert/RIOT,phiros/RIOT,alignan/RIOT,ant9000/RIOT,tfar/RIOT,altairpearl/RIOT,rajma996/RIOT,centurysys/RIOT,abp719/RIOT,patkan/RIOT,gebart/RIOT,jhollister/RIOT,arvindpdmn/RIOT,jbeyerstedt/RIOT-OTA-update,jfischer-phytec-iot/RIOT,Osblouf/RIOT,lazytech-org/RIOT,miri64/RIOT,l3nko/RIOT,changbiao/RIOT,lazytech-org/RIOT,EmuxEvans/RIOT,kb2ma/RIOT,gbarnett/RIOT,dhruvvyas90/RIOT,x3ro/RIOT,Yonezawa-T2/RIOT,aeneby/RIOT,robixnai/RIOT,stevenj/RIOT,MonsterCode8000/RIOT,openkosmosorg/RIOT,syin2/RIOT,chris-wood/RIOT,mziegert/RIOT,nsol-nmsu/RIOT,abkam07/RIOT,stevenj/RIOT,koenning/RIOT,JensErdmann/RIOT,avmelnikoff/RIOT,gebart/RIOT,thomaseichinger/RIOT,AnonMall/RIOT,rfswarm2/RIOT,Lexandro92/RIOT-CoAP,luciotorre/RIOT,MonsterCode8000/RIOT,robixnai/RIOT,changbiao/RIOT,rfuentess/RIOT,Osblouf/RIOT,spium/IoT-RIOT,MarkXYang/RIOT,herrfz/RIOT,dailab/RIOT,alex1818/RIOT,ros2/ros2_embedded_riot,ros2/ros2_embedded_riot,gbarnett/RIOT,sgso/RIOT,adjih/RIOT,yogo1212/RIOT,tfar/RIOT,locicontrols/RIOT,BytesGalore/RIOT,A-Paul/RIOT,jbeyerstedt/RIOT-OTA-update,emmanuelsearch/RIOT,marcosalm/RIOT,DipSwitch/RIOT,d00616/RIOT,mziegert/RIOT,binarylemon/RIOT,adrianghc/RIOT,binarylemon/RIOT,asanka-code/RIOT,MohmadAyman/RIOT,kaspar030/RIOT,EmuxEvans/RIOT,kushalsingh007/RIOT,jremmert-phytec-iot/RIOT,aeneby/RIOT,kerneltask/RIOT,wentaoshang/RIOT,locicontrols/RIOT,d00616/RIOT,gautric/RIOT,EmuxEvans/RIOT,BytesGalore/PetersRIOT,msolters/RIOT,rakendrathapa/RIOT,haoyangyu/RIOT,centurysys/RIOT,plushvoxel/RIOT,haoyangyu/RIOT,biboc/RIOT,dhruvvyas90/RIOT,kushalsingh007/RIOT,asanka-code/RIOT,ThanhVic/RIOT,adjih/RIOT,LudwigOrtmann/RIOT,bartfaizoltan/RIOT,tfar/RIOT,locicontrols/RIOT,brettswann/RIOT,neumodisch/RIOT,kushalsingh007/RIOT,altairpearl/RIOT,smlng/RIOT,herrfz/RIOT-old,haoyangyu/RIOT,mfrey/RIOT,locicontrols/RIOT,rakendrathapa/RIOT,x3ro/RIOT,dailab/RIOT,automote/RIOT,bartfaizoltan/RIOT,cladmi/RIOT,binarylemon/RIOT,kYc0o/RIOT,ThanhVic/RIOT,wentaoshang/RIOT,ntrtrung/RIOT,AnonMall/RIOT,avmelnikoff/RIOT,jasonatran/RIOT,attdona/RIOT,attdona/RIOT,katezilla/RIOT,benoit-canet/RIOT,haoyangyu/RIOT,yogo1212/RIOT,changbiao/RIOT,Osblouf/RIOT,rfswarm/RIOT,backenklee/RIOT,openkosmosorg/RIOT,kbumsik/RIOT,RIOT-OS/RIOT,zhuoshuguo/RIOT,FrancescoErmini/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,chris-wood/RIOT,yogo1212/RIOT,bartfaizoltan/RIOT,rousselk/RIOT,khhhh/RIOT,herrfz/RIOT-old,jferreir/RIOT,benoit-canet/RIOT,Lotterleben/RIOT,authmillenon/RIOT,miri64/RIOT,Ell-i/RIOT,khhhh/RIOT,jremmert-phytec-iot/RIOT,tfar/RIOT,fnack/RIOT,gautric/RIOT,l3nko/RIOT,malosek/RIOT,MohmadAyman/RIOT,alignan/RIOT,LudwigKnuepfer/RIOT,plushvoxel/RIOT,zhuoshuguo/RIOT,kaleb-himes/RIOT,PSHIVANI/Riot-Code,biboc/RIOT,rfswarm2/RIOT,kaspar030/RIOT,sumanpanchal/RIOT,AnonMall/RIOT,thomaseichinger/RIOT,jhollister/RIOT,BytesGalore/RIOT,beurdouche/RIOT,jbeyerstedt/RIOT-OTA-update,abp719/RIOT,marcosalm/RIOT,stevenj/RIOT,msolters/RIOT,luciotorre/RIOT,sgso/RIOT,wentaoshang/RIOT,rakendrathapa/RIOT,daniel-k/RIOT,biboc/RIOT,Yonezawa-T2/RIOT,ant9000/RIOT,kb2ma/RIOT,x3ro/RIOT,emmanuelsearch/RIOT,RIOT-OS/RIOT,jbeyerstedt/RIOT-OTA-update,lebrush/RIOT,attdona/RIOT,LudwigOrtmann/RIOT,thiagohd/RIOT,TobiasFredersdorf/RIOT,tdautc19841202/RIOT,RubikonAlpha/RIOT,RBartz/RIOT,abkam07/RIOT,JensErdmann/RIOT,marcosalm/RIOT,toonst/RIOT,josephnoir/RIOT,jremmert-phytec-iot/RIOT,LudwigKnuepfer/RIOT,plushvoxel/RIOT,Osblouf/RIOT,latsku/RIOT,kerneltask/RIOT,rfuentess/RIOT,Yonezawa-T2/RIOT,authmillenon/RIOT,mfrey/RIOT,msolters/RIOT,nsol-nmsu/RIOT,ros2/ros2_embedded_riot,ximus/RIOT,EmuxEvans/RIOT,patkan/RIOT,dailab/RIOT,nsol-nmsu/RIOT,BytesGalore/RIOT,benoit-canet/RIOT,alex1818/RIOT,wentaoshang/RIOT,zhuoshuguo/RIOT,hamilton-mote/RIOT-OS,rfswarm2/RIOT,jhollister/RIOT,nsol-nmsu/RIOT,daniel-k/RIOT,asanka-code/RIOT,luciotorre/RIOT,katezilla/RIOT,smlng/RIOT,thomaseichinger/RIOT,Lotterleben/RIOT,RBartz/RIOT,ros2/ros2_embedded_riot,alex1818/RIOT,Lexandro92/RIOT-CoAP,alignan/RIOT,msolters/RIOT,mfrey/RIOT,malosek/RIOT,dailab/RIOT,RubikonAlpha/RIOT,arvindpdmn/RIOT,abkam07/RIOT,chris-wood/RIOT,spium/IoT-RIOT,gautric/RIOT,1blankz7/RIOT,TobiasFredersdorf/RIOT,rfuentess/RIOT,altairpearl/RIOT,gebart/RIOT,aeneby/RIOT,kbumsik/RIOT,locicontrols/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,fnack/RIOT,roberthartung/RIOT,EmuxEvans/RIOT,centurysys/RIOT,chris-wood/RIOT,kbumsik/RIOT,miri64/RIOT,Yonezawa-T2/RIOT,emmanuelsearch/RIOT,herrfz/RIOT,kYc0o/RIOT,dailab/RIOT,phiros/RIOT,cladmi/RIOT,spium/IoT-RIOT,latsku/RIOT,wentaoshang/RIOT,RubikonAlpha/RIOT,zhuoshuguo/RIOT,automote/RIOT,mtausig/RIOT,l3nko/RIOT,rousselk/RIOT,herrfz/RIOT-old,lebrush/RIOT,benoit-canet/RIOT,abp719/RIOT,beurdouche/RIOT,openkosmosorg/RIOT,LudwigOrtmann/RIOT,cladmi/RIOT,avmelnikoff/RIOT,asanka-code/RIOT,neiljay/RIOT,sgso/RIOT,rfswarm/RIOT,mziegert/RIOT,jhollister/RIOT,kYc0o/RIOT,latsku/RIOT,OlegHahm/RIOT,Lotterleben/RIOT,dkm/RIOT,kaleb-himes/RIOT,latsku/RIOT,kerneltask/RIOT,tdautc19841202/RIOT,robixnai/RIOT,koenning/RIOT,Osblouf/RIOT,rfswarm2/RIOT,kbumsik/RIOT,Lexandro92/RIOT-CoAP,toonst/RIOT,adjih/RIOT,jasonatran/RIOT,ntrtrung/RIOT,daniel-k/RIOT,jasonatran/RIOT,kaspar030/RIOT,adjih/RIOT,attdona/RIOT,Ell-i/RIOT,PSHIVANI/Riot-Code,lazytech-org/RIOT,sgso/RIOT,ThanhVic/RIOT,dhruvvyas90/RIOT,khhhh/RIOT,RBartz/RIOT,attdona/RIOT,plushvoxel/RIOT,mziegert/RIOT,LudwigOrtmann/RIOT,d00616/RIOT,alex1818/RIOT,RBartz/RIOT,benoit-canet/RIOT,altairpearl/RIOT,immesys/RiSyn,JensErdmann/RIOT,emmanuelsearch/RIOT,Hyungsin/RIOT-OS,ximus/RIOT,rajma996/RIOT,basilfx/RIOT,herrfz/RIOT-old,yogo1212/RIOT,mziegert/RIOT,AnonMall/RIOT,1blankz7/RIOT,patkan/RIOT,TobiasFredersdorf/RIOT,Ell-i/RIOT,khhhh/RIOT,RubikonAlpha/RIOT,brettswann/RIOT,OTAkeys/RIOT,Josar/RIOT,neumodisch/RIOT,dhruvvyas90/RIOT,ntrtrung/RIOT,sumanpanchal/RIOT,avmelnikoff/RIOT,binarylemon/RIOT,automote/RIOT,authmillenon/RIOT,malosek/RIOT,emmanuelsearch/RIOT,FrancescoErmini/RIOT,rfuentess/RIOT,jhollister/RIOT,Lotterleben/RIOT,ks156/RIOT,basilfx/RIOT,OTAkeys/RIOT,mtausig/RIOT,1blankz7/RIOT,abkam07/RIOT,rajma996/RIOT,ntrtrung/RIOT,syin2/RIOT,chris-wood/RIOT,LudwigKnuepfer/RIOT,OlegHahm/RIOT,neiljay/RIOT,jbeyerstedt/RIOT-OTA-update,neumodisch/RIOT,MarkXYang/RIOT,dkm/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,beurdouche/RIOT,herrfz/RIOT,d00616/RIOT,basilfx/RIOT,OTAkeys/RIOT,binarylemon/RIOT,plushvoxel/RIOT,Yonezawa-T2/RIOT,jremmert-phytec-iot/RIOT,gbarnett/RIOT,zhuoshuguo/RIOT,DipSwitch/RIOT,katezilla/RIOT,openkosmosorg/RIOT,automote/RIOT,spium/IoT-RIOT,neumodisch/RIOT,hamilton-mote/RIOT-OS,jremmert-phytec-iot/RIOT,AnonMall/RIOT,ant9000/RIOT,watr-li/RIOT,Darredevil/RIOT,herrfz/RIOT-old,jferreir/RIOT,patkan/RIOT,mfrey/RIOT,basilfx/RIOT,watr-li/RIOT,LudwigOrtmann/RIOT,koenning/RIOT,locicontrols/RIOT,rakendrathapa/RIOT,Lotterleben/RIOT