Merge pull request #30 from deining/master

Minor fix to comment

luajit: fix failing function

Make koans compatible with lua 5.4

Fix misleading comment (#29)

adds Travis status to Readme

regen

modifies test in errors.lua to be compatible with all versions of Lua

fixes typo

makes lua_greater_or_equal_5_2/3 defined where needed instead of globally

fixes coroutines version errors

runs missions from src in travis

removes luacheck from travis build

removes gh-pages exception from travis

Adds first travis file