v0.1.2: New dashboard and bug fixes

0.1.2 Blog Post: http://coreos.com/blog/etcd-v0.1.2-new-dashboard-and-bugfixes/

Thank you to all of the contributors in this release:

Andrew Hobden, AndyPook, Antonio Terreno, Brandon Philips, David Fisher, Deniz Adrian, Derek Chiang (Enchi Jiang), Diwaker Gupta, Evan, Fabrizio (Misto) Milo, Fatih Arslan, Geoff Hayes, Yifan Gu, Jose Plana, Michael Burns, Michael Marineau, Michael Stillwell, Rob Szumski, Roberto Aguilar, Theo Hultberg, Xiang Li, kelseyhightower