move from legacy precise to trusty build image
fix PATH not including buildroot/bin
remove symolic link to ~/bin as trusty travis image doesn't include it in PATH anyway
move from legacy precise to trusty build image
fix PATH not including buildroot/bin
remove symolic link to ~/bin
enable sudo
trusty travis image doesn't source ~/bin by default
avr requires sude
TravisCI "trusty" build dist isn't picking up build path causing travis checks to fail. Reverting to legacy "precise" dist while we investigate
pristine != precise
USBCON is definied by serial.h pullikng in MarlinConfig.h which in turn pulls in Arduino.h. Defining in later includes has shown to cause compile issues so removing all extraneous calls for and potentially easier future linker troubleshooting.
more USBCON unification
-Update Arduino IDE extension descriptions
-Set default motor currents if not defined in Configuration_adv.h
-Support for MINIPANEL LCD
-Support for choosing internal or panel SD
Dave JohnsonandScott Lahteine
