Update readme to include a sections on stubbing policy for view specs and external resources.
Merge pull request #58 from christiannelson/master

Policy helper for rspec view specs
Clarify meaning of a few variables
Merge pull request #67 from elabs/clarify_internals

Clarify internal variables
Update and fix readme section on strong parameters
Merge pull request #71 from elabs/strong_parameters

Update and fix readme section on strong parameters
Fix a broken link in README.md

The link to documentation about `rescue_from` used to point to #rescue_from instead of #rescue-from.
Merge pull request #73 from ulyssecarion/master

Fix a broken link in README.md
README: Fix Scope definition example
Merge pull request #75 from joelcogen/master

README: Fix Scope definition example
New expectations rspec syntax in README
Rename PostablePolicyClass to PostablePolicy in README for clarity
Updated README to cover mass-assignment protection for the create method
different matchers for should and should_not
Merge pull request #92 from assembler/rspec-negative-matcher

different rspec matchers for should and should_not
Update list of supported rubies
Merge pull request #91 from ryakh/fixing-readme

Updated README to cover mass-assignment protection for the create method
Merge pull request #87 from mattruzicka/master

Rename PostablePolicyClass to PostablePolicy in README for clarity
Merge pull request #86 from kirs/patch-1

New expectations rspec syntax in README
minor edits for consistency, readability