fix UnicodeEncodeError when using `alias()` with Unicode text
Update Django version message

This way it matches the actual comparison
Adding Sensu to list of tools
Merge pull request #506 from clouseau/patch-1

Adding Sensu to list of tools
Fix typo
Merge pull request #507 from clouseau/patch-2

Fix typo
Update tools.rst to add Cubism.js
Merge pull request #508 from arthurbarr/patch-1

Update tools.rst to add Cubism.js
Docs/tools: add pipe-to-graphite

We wrote [pipe-to-graphite](https://github.com/iFixit/pipe-to-graphite)
a while ago to make it easy to record the output from the status
commands of gearmand, memcached, varnish, etc.  I don't know why we
never added it to the list of tools, so here it is.
Merge pull request #518 from iFixit/pipe-to-graphite

Docs/tools: add pipe-to-graphite
Merge pull request #481 from matschaffer/patch-1

Update Django version message
updates per @brutasse's comments
Merge pull request #480 from tsabirgaliev/master

fix UnicodeEncodeError when using `alias()` with Unicode text
Complete instructions for setting up a dev environment.