Adds CocoaPod installation instructions

With a simple and more advanced example
Adds a +dictionaryFromQueryString as a counterpart to the -queryString

- This method gives back a dictionary of strings from the passed in query string.
- un-freezes the podspec and bumps it to 0.1.0
- Adds CHANGES.markdown to track what is being modified
Merge pull request #66 from pivotalshiny/dictionaryFromQueryString

Adds a +dictionaryFromQueryString as a counterpart to the -queryString
Merge pull request #67 from pivotalshiny/cocoapod_readme

Adds CocoaPod installation instructions
Converts UIKit+SpecHelperStubs static library to be all ARC

- also updates Podspec to that effect
- adds Foundation+PivotalSpecHelper.h to SpecHelper subspec source files
Update CHANGES.markdown to indicate UIKit+PivotalSpecHelperStubs now requires ARC
Expose CHANGES.markdown in workspace to encourage updates
Suppress deprecation warning in NSString size estimation category
Clean up UIPopoverController+Spec a bit

- mild DRY refactor
- remove unnecessary/untested -dealloc override
Renames FakeOperationQueue => PSHKFakeOperationQueue

Previous class name is aliased for backwards compatibility
Update Cedar to latest
Tidy up UIKit build settings by enabling 64 bit architectures at the project root
Add methods to NSDictionary for retrieving values that are guaranteed to be of the expected class
Update Cedar to latest
Names spec helper extensions to be more consistent
Adds UIActivityViewController stubs.

* -activityItems
* -applicationActivities
Merge pull request #69 from pivotal-brian-croom/dictionary-typesafe-extraction

Add methods to NSDictionary for retrieving values that are guaranteed to be of the expected class
Change to autoreleasing method family and release test object (MRC specs)
Merge pull request #70 from joemasilotti/activityVC-stubs

Adds UIActivityViewController stubs
Fixes up memory management of UIActivityController+Spec

- Adds static analysis hint to declared non-init-family initializer
- Fixes init code path to avoid a BAD_ACCESS crash
- Associated object key uses address of char instead of literal value
- Ensures test objects are (auto)released