Revert "Revert "Update GCC48 version to 4.8.3 and add boxen prefix""
Merge pull request #10 from boxen/revert-9-revert-6-rm-gcc48-3

Revert "Revert "Update GCC48 version to 4.8.3 and add boxen prefix""
update formula to homebrew standard
move naming from gcc48 to gcc
Update .travis.yml
moved back to gcc48