doc: describe usage of DEVELHELP
doc: describe usage of DEVELHELP

gebart/RIOT,OlegHahm/RIOT,kYc0o/RIOT,gebart/RIOT,BytesGalore/RIOT,LudwigKnuepfer/RIOT,gebart/RIOT,miri64/RIOT,rfuentess/RIOT,ant9000/RIOT,neiljay/RIOT,BytesGalore/RIOT,ant9000/RIOT,avmelnikoff/RIOT,kaspar030/RIOT,OlegHahm/RIOT,smlng/RIOT,neiljay/RIOT,kaspar030/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,smlng/RIOT,lazytech-org/RIOT,cladmi/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,lazytech-org/RIOT,authmillenon/RIOT,toonst/RIOT,neiljay/RIOT,yogo1212/RIOT,mtausig/RIOT,x3ro/RIOT,kYc0o/RIOT,OTAkeys/RIOT,yogo1212/RIOT,authmillenon/RIOT,kaspar030/RIOT,x3ro/RIOT,mfrey/RIOT,roberthartung/RIOT,kbumsik/RIOT,kaspar030/RIOT,yogo1212/RIOT,OTAkeys/RIOT,biboc/RIOT,roberthartung/RIOT,x3ro/RIOT,miri64/RIOT,RIOT-OS/RIOT,mfrey/RIOT,miri64/RIOT,mfrey/RIOT,lazytech-org/RIOT,avmelnikoff/RIOT,cladmi/RIOT,rfuentess/RIOT,toonst/RIOT,OlegHahm/RIOT,smlng/RIOT,Josar/RIOT,kbumsik/RIOT,ant9000/RIOT,LudwigOrtmann/RIOT,basilfx/RIOT,gebart/RIOT,authmillenon/RIOT,ks156/RIOT,kYc0o/RIOT,kYc0o/RIOT,jasonatran/RIOT,mtausig/RIOT,A-Paul/RIOT,authmillenon/RIOT,authmillenon/RIOT,OTAkeys/RIOT,LudwigOrtmann/RIOT,josephnoir/RIOT,biboc/RIOT,LudwigOrtmann/RIOT,Josar/RIOT,aeneby/RIOT,neiljay/RIOT,avmelnikoff/RIOT,Josar/RIOT,ks156/RIOT,ks156/RIOT,aeneby/RIOT,ks156/RIOT,RIOT-OS/RIOT,immesys/RiSyn,Josar/RIOT,yogo1212/RIOT,aeneby/RIOT,LudwigOrtmann/RIOT,smlng/RIOT,josephnoir/RIOT,basilfx/RIOT,x3ro/RIOT,immesys/RiSyn,biboc/RIOT,neiljay/RIOT,A-Paul/RIOT,BytesGalore/RIOT,roberthartung/RIOT,A-Paul/RIOT,toonst/RIOT,smlng/RIOT,aeneby/RIOT,biboc/RIOT,gebart/RIOT,rfuentess/RIOT,RIOT-OS/RIOT,biboc/RIOT,toonst/RIOT,kbumsik/RIOT,cladmi/RIOT,basilfx/RIOT,kbumsik/RIOT,RIOT-OS/RIOT,A-Paul/RIOT,lazytech-org/RIOT,LudwigKnuepfer/RIOT,miri64/RIOT,authmillenon/RIOT,BytesGalore/RIOT,immesys/RiSyn,kbumsik/RIOT,josephnoir/RIOT,OTAkeys/RIOT,LudwigKnuepfer/RIOT,x3ro/RIOT,immesys/RiSyn,cladmi/RIOT,mtausig/RIOT,jasonatran/RIOT,lazytech-org/RIOT,ant9000/RIOT,mfrey/RIOT,basilfx/RIOT,LudwigOrtmann/RIOT,rfuentess/RIOT,OTAkeys/RIOT,LudwigOrtmann/RIOT,immesys/RiSyn,mfrey/RIOT,aeneby/RIOT,ks156/RIOT,BytesGalore/RIOT,A-Paul/RIOT,yogo1212/RIOT,kaspar030/RIOT,rfuentess/RIOT,roberthartung/RIOT,roberthartung/RIOT,josephnoir/RIOT,avmelnikoff/RIOT,miri64/RIOT,mtausig/RIOT,jasonatran/RIOT,jasonatran/RIOT,ant9000/RIOT,LudwigKnuepfer/RIOT,immesys/RiSyn,LudwigKnuepfer/RIOT,avmelnikoff/RIOT,mtausig/RIOT,cladmi/RIOT,yogo1212/RIOT,josephnoir/RIOT,Josar/RIOT,jasonatran/RIOT,basilfx/RIOT,toonst/RIOT