add podspec to Ruby lexer
Merge pull request #195 from NARKOZ/podspec

add podspec to Ruby lexer
Add arch linux PKGBUILD to shell lexer
README improvements
Merge pull request #194 from rumpelsepp/master

Add arch linux PKGBUILD to shell lexer
Merge pull request #196 from rumpelsepp/readme

README improvements
add Podfile to Ruby lexer
Merge pull request #197 from NARKOZ/podfile

add Podfile to Ruby lexer