Strips multiple slashes in normalizePath
Updates normalizePaths to account for *nix and Windows style directory separators
Update .travis.yml
Merge pull request #238 from GrahamCampbell/patch-1

Update .travis.yml
Test fixes
Removed an unneeded check
Merge pull request #239 from GrahamCampbell/hhvm

Test Fixes
Merge pull request #230 from zanui/normalize-multiple-slashes

Normalizes multiple directory separators in normalizePath
Cleaned up the Util path normalization.
Cleaned up the FilesystemInterface
Merge pull request #1 from thephpleague/master

Update from origin