Merge pull request #3 from ilario/master

Added CONFIG_TARGET specification for LiMe targets
Add files/ directory in lime-build root
Change ilegal firwmare image characters for "_"
Remove some not needed shit from nightlycompile
Fix some things related with selected branch when compiling
Update README
In order to reduce firmware size, enable libs and kernel striping
Disable bat-adv mcast plugin which does not allow ff02::2 pings