README.md: add repo instructions
README.md: add repo instructions

Signed-off-by: Brendan Le Foll <3e0e8c4069934e8b47d99704927a85c66c0ceb33@intel.com>

nioinnovation/mraa,alext-mkrs/mraa,malikabhi05/mraa,Meirtz/mraa,KurtE/mraa,seem-sky/mraa,matt-auld/mraa,whbruce/mraa,arunlee77/mraa,yangjae/mraa,seem-sky/mraa,zBMNForks/mraa,yongli3/mraa,intel-iot-devkit/mraa,damcclos/mraa,Meirtz/mraa,yoyojacky/mraa,sergev/mraa,intel-iot-devkit/mraa,anonymouse64/mraa,zBMNForks/mraa,Kiritoalex/mraa,sergev/mraa,ncrastanaren/mraa,neuroidss/mraa,spitfire88/mraa,neuroidss/mraa,arfoll/mraa,neuberfran/mraa,Jon-ICS/mraa,allela-roy/mraa,STANAPO/mraa,stefan-andritoiu/mraa,pctj101/mraa,noahchense/mraa,Kiritoalex/mraa,tripzero/mraa,nioinnovation/mraa,tripzero/mraa,andreivasiliu2211/mraa,Jon-ICS/mraa,sergev/mraa,pctj101/mraa,Kiritoalex/mraa,alexandru-elisei/mraa,neuberfran/mraa,seem-sky/mraa,sundw2014/mraa,whbruce/mraa,intel-iot-devkit/mraa,w4ilun/mraa,spitfire88/mraa,w4ilun/mraa,alexandru-elisei/mraa,stefan-andritoiu/mraa,Propanu/mraa,petreeftime/mraa,arfoll/mraa,Pillar1989/mraa,jontrulson/mraa,timrtoo/Intel,Pillar1989/mraa,yangjae/mraa,g-vidal/mraa,smileboywtu/mraa,alext-mkrs/mraa,timrtoo/Intel,ProfFan/mraa,alex1818/mraa,Hbrinj/mraa,sergev/mraa,w4ilun/mraa,nioinnovation/mraa,timrtoo/Intel,STANAPO/mraa,ncrastanaren/mraa,zBMNForks/mraa,smileboywtu/mraa,jontrulson/mraa,stefan-andritoiu/mraa,Propanu/mraa,andreivasiliu2211/mraa,noahchense/mraa,tripzero/mraa,stefan-andritoiu/mraa-gpio-chardev,stefan-andritoiu/mraa-gpio-chardev,alex1818/mraa,alext-mkrs/mraa,SyrianSpock/mraa,alexandru-elisei/mraa,Propanu/mraa,whbruce/mraa,sundw2014/mraa,g-vidal/mraa,seem-sky/mraa,Meirtz/mraa,g-vidal/mraa,ncrastanaren/mraa,noahchense/mraa,anonymouse64/mraa,whbruce/mraa,yoyojacky/mraa,yangjae/mraa,yongli3/mraa,g-vidal/mraa,Propanu/mraa,spitfire88/mraa,neuroidss/mraa,sundw2014/mraa,pctj101/mraa,neuberfran/mraa,ncrastanaren/mraa,Hbrinj/mraa,jontrulson/mraa,Pillar1989/mraa,Propanu/mraa,alexandru-elisei/mraa,damcclos/mraa,andreivasiliu2211/mraa,malikabhi05/mraa,intel-iot-devkit/mraa,Hbrinj/mraa,smileboywtu/mraa,KurtE/mraa,malikabhi05/mraa,neuberfran/mraa,seem-sky/mraa,noahchense/mraa,stefan-andritoiu/mraa-gpio-chardev,alex1818/mraa,mircea/mraa,stefan-andritoiu/mraa-gpio-chardev,arunlee77/mraa,petreeftime/mraa,yongli3/mraa,Jon-ICS/mraa,petreeftime/mraa,ncrastanaren/mraa,ProfFan/mraa,stefan-andritoiu/mraa,damcclos/mraa,g-vidal/mraa,spitfire88/mraa,alext-mkrs/mraa,matt-auld/mraa,KurtE/mraa,SyrianSpock/mraa,anonymouse64/mraa,yoyojacky/mraa,pctj101/mraa,petreeftime/mraa,alexandru-elisei/mraa,mircea/mraa,stefan-andritoiu/mraa-gpio-chardev,arunlee77/mraa,andreivasiliu2211/mraa,yongli3/mraa,allela-roy/mraa,w4ilun/mraa,sergev/mraa,allela-roy/mraa,yangjae/mraa,matt-auld/mraa,jontrulson/mraa,Hbrinj/mraa,KurtE/mraa,timrtoo/Intel,intel-iot-devkit/mraa,arfoll/mraa,pctj101/mraa,arfoll/mraa,sundw2014/mraa,timrtoo/Intel,malikabhi05/mraa,arunlee77/mraa,ProfFan/mraa,mircea/mraa,malikabhi05/mraa,yongli3/mraa,noahchense/mraa,STANAPO/mraa,neuberfran/mraa,jontrulson/mraa,stefan-andritoiu/mraa,sundw2014/mraa,SyrianSpock/mraa,alext-mkrs/mraa,KurtE/mraa,ProfFan/mraa,arfoll/mraa