Fix chapter7 to make compilation succeed
Fix chapter3 to compile
Fix chapter4 to compile successfully
Fix chapter5 to compile
Fix chapter6 to compile
Merge branch 'master' of https://github.com/sdiehl/kaleidoscope
Add executables to kaleidoscope.cabal
Add ,travis.yml
Merge branch 'master' of https://github.com/koba-e964/kaleidoscope into koba-e964-master
added travis build status