Add hspec task in Makefile

Previously, trying to build the site caused errors because ../dist
didn't exist. This commit fixes the issue by adding a 'hspec' task which
creates a sandbox and builds Hspec.
Add pending examples to docs (#175)
Merge pull request #176 from hdgarrood/add-makefile-task

Add hspec task in Makefile
Merge pull request #177 from hdgarrood/pending-docs

Add pending examples to docs (#175)
Update list of contributors
Add hooks examples
Tweak
Add bracket example
Redo code examples re @sol's suggestions
Merge pull request #178 from hdgarrood/hooks-examples

Hooks examples
Fix indentation in docs code examples

Fixes indentation mistakes I made when writing the docs the first time.
Merge pull request #179 from hdgarrood/fix-indentation

Fix indentation in docs code examples
Allow hspec-expectations-0.6.0
Update list of contributors
Add Zhang Yichao to list of contributors
Update CHANGES
Rename package to hspec2, do not expose it
Add support for arguments to before/after/around
add beforeWith to transform param for cases
Add beforeAll and beforeAllWith