Added a chapter sub-generator.
Update README.md
Merge branch 'master' of https://github.com/LeoColomb/generator-latex
- added requested fixes and pulled from upstream
- removed 1.tex and chapterness from app
- made app call subgenerator

Conflicts:
	README.md
Whoops, forgot to update a test.
Clean up merging
Fixes sub-generator engine to follow yeoman guidelines
Merge branch 'pr/2'

* pr/2:
  Fixes sub-generator engine to follow yeoman guidelines
  Clean up merging
  Whoops, forgot to update a test.
  Update README.md
  Added a chapter sub-generator.