Merge pull request php-vcr#122 from york-solutions/fix-posts Fix POST requests

Merge pull request php-vcr#110 from dbu/avoid-writeable-check-in-read… …only-mode Avoid writeable check when in mode 'none' to run on readonly filesystems

Fixes assertion message to include the cassette path. 

Changes request matchers to match on identity instead of patterns. New requests must match stored requests exactly. This change is necessary because of many misunderstandings why a request is not matched.

Merge pull request php-vcr#102 from morrislaptop/master Allow function names that have keywords (e.g. raven/raven library)

Improves the exception message when a request is not found in a casse… …tte. See php-vcr#94 for further information.

Merge pull request php-vcr#91 from aaa2000/wrong-json-stored-in-casette Correction of JSON when the file already exists and is blank

Merge pull request php-vcr#81 from K-Phoen/blackhole-storage Provide a blackhole storage that looses everything it stores (useful for the bundle)

Updates Readme. 

Adds release to readme.