Merge pull request #34 from endersstocker/master

Fixed grammar in variable name
Add pending tests

pending function ignores the block passed.
Move pending tests to functional test files
Add Foundation to use NSLog without warning messages
Rearrange functional tests
README: add pending
README: update screenshot
README: explain examples, groups
README: fix indentation for context
s/PoetSpec/DolphinSpec/g
README: use 1st-person in feature descriptions
README: display example right after screenshot
README: add import
README: fix typo s/that/what
README: fix typo expect{}.will
README: add logo
README: explain it better
Contain: fix crash for nil failure messages

Unwrapping of optional value in failure message methods caused a crash
to occur when the subject of a failing expectation was nil.

- Remove unwrap
- Spruce up failure message for nil subjects: output "nil" instead of
  "[ nil ]"
Merge pull request #1 from modocache/master

Brought up to date