FileTest methods remove, __construct
FileTest made faster -4sec (no sleep)
psr states value being null shouldn't be used to determine if cache was hit
Fix test for exception on unwritable directory
Add PHP 5.5 to Travis config
Adds some tests for cache classes.
Make exists public.
Fix some code standard issues in tests.
Adds a File test.
Enabling apc, redis in travis.
Adding memcached, redis & apc services.
Fixing apc extension loading for php 5.5
Adds test for clear & exists method of Cache.
Fix README typo
Merge pull request #9 from asika32764/patch-1

Fix README typo
Remove unused bootstrap.php file.
Corrects type of assertion used in tests.
Adds php5.6 and enables apc extension for same.
Merge pull request #10 from Achal-Aggarwal/enabling-ext

Adds some tests and enables apc, redis services at travis for testing.
Doc blocks from last PR