Improve cli tests, fs.exists should be checked after writing the file
Merge pull request #149 from arian/improve-cli-tests

Improve cli tests, fs.exists should be checked after writing the file.
Added DocPad plugin info to README.md
Merge pull request #152 from jking90/feature_readme-update

Added DocPad plugin info to README.md
0.6.5
Fix --include-path option. (typo instead of --include-paths).

The option should be --include-path. You can have multiple
--include-path options though. Add a test where this is the case.
Merge pull request #153 from arian/fix-cli-include-path

Fix --include-path option. (typo instead of --include-paths).
0.6.6
Build: Add v8 specific platform builds

Idea courtesy of node-fibers.
When installing, check to see if there is a compatible binary version
for the current version of v8. v8 3.6 = Node 0.6, 3.11 = Node 0.8, 3.14
= Node 0.10. The test suite is run as well, so that any underlying
libsass breaks will be rebuilt.

Closes gh-146

Signed-off-by: Nick Schonning <nschonni@gmail.com>