Revert "User's guide (README)"

This reverts commit b4b0fed525c8b8695111557b290edde6262b652b.
Revert "Default help page"

This reverts commit b374563f8f0e3c8ab1ffa89b756d312347d00acd.
Revert "Default front page"

This reverts commit d5a78b224d63fd64a71fa8e10ca6982794ecfb8c.
Add CHANGELOG.md and README.md.

The extra-doc-files property requires cabal-version >= 1.18 (c.f.
http://coldwa.st/e/blog/2013-08-21-Cabal-1-18.html).  Bump this requirement
from 1.10.
Add homepage and bug-tracker to cabal file, linking to github.
Update tested-with version: GHC-7.8.3.
Bump version to 0.1.0.3 from 0.1.0.2.