Minor php-cs-fixer fixes.
Use sys_get_temp_dir()

Instead of hardcoding `/tmp/`
Add test for getHomeDir()
Add failing test for Windows home dir.
Add support for Window home directory.

$HOMEDRIVE/$HOMEPATH
Merge pull request #8 from bobthecow/feature/more-inclusive-defaults

More inclusive defaults
Use library as composer type
Add readme
Merge pull request #11 from bcremer/add-readme

Add readme
Merge pull request #10 from bcremer/fix-composer-json

Use library as composer type
Add travis ci
Merge pull request #12 from bcremer/add-travis-ci

Add travis ci