Add .gitignore.
Add .gitignore.

jschmidlapp/cmocka,aleksandr-vin/cmock,aleksandr-vin/cmock,lsjostro/cmocka,tyc/cmocka,wingyplus/cmocka,tyc/cmocka,jamesmunns/CMocka,dsch/cmocka,dsch/cmocka,Odie/cmocka,jhrozek/cmocka,JonathonReinhart/cmocka,jschmidlapp/cmocka,chadversary/cmocka,linuxmaniac/cmocka,tyc/cmocka,Odie/cmocka,chadversary/cmocka,nuumio/cmocka,VladimirTyrin/cmocka,jschmidlapp/cmocka,clibs/cmocka,nuumio/cmocka,jhrozek/cmocka,lsjostro/cmocka,JonathonReinhart/cmocka,VladimirTyrin/cmocka,wingyplus/cmocka,linuxmaniac/cmocka,nuumio/cmocka,Odie/cmocka,jhrozek/cmocka,clibs/cmocka,jamesmunns/CMocka