fix /usr/bin/emulationstation generation

escape in HERE document to avoid unintended evalution during retropie_setup.sh run
Merge pull request #146 from epleterte/escape_esscript_generation

fix /usr/bin/emulationstation generation
Added Apple 2 emulator "Linapple"
Added PC emulator rpix86, changed video mode for HDMI to VGA to enhance performance