Merge branch 'release/0.2.14'
Merge branch 'release/0.2.15'
Merge branch 'release/0.2.16'
Merge branch 'release/0.2.17'
Merge branch 'release/0.2.18'
Merge branch 'release/0.2.19'
Readme: add link to Google Group.
Readme: add link to changelog as well.
Readme: update Neo4j installation instructions.

To use Neo4j 1.8.2, and to symlink and gitignore it.
Simplify build; precompile to JS on publish now.

Fixes #35 also (installing on Heroku with Node 0.10).

I had originally considered this and went with compile-on-install so that
the CoffeeScript and Streamline compiler dependencies could be treated like
other dependencies -- use the best matching version at installation time
instead of effectively "freezing" those dependencies by compiling at publish
time -- but it seems this does simplify things. One less moving part at
deploy time for users. I can dig that.

Thanks @flipside for the nudge!
Bump version to 0.2.20, update changelog, publish.
Merge branch 'release/0.2.20' into develop
Merge branch 'release/0.2.20'
Minor: clean on postpublish now!

Npm used to run postpublish scripts in a temporary dir used for publishing,
which wasn't useful here.

That's no longer the case, thanks to:

https://github.com/isaacs/npm/pull/3053

So we can clean up our compiled CoffeeScript-Streamline code here now. Sweet!
added unindex function for nodes
got unindex to work, removes all key/value pairs in index matching the node id
unindex now supports optional key/value paramaters
added get/create/delete node index functions
added indexUniquely for nodes and added all new index functions to relationships
added unindex function for nodes