ExaProxy 'Hawaii' release

This is a bug fix only release. Thank you to everyone for their contribution.

• Fix: issue with handling of max-forwards
  patch by Tim Watts
• Fix: gracefully shutdown when trying to read over a closed pipe for communication with another process
  reported by Emanuele Rocca
• Fix: issue #9, pip installation

ExaProxy 'GitHub' release

This is the first release since our move from Google Code.

Many improvements since 1.1.2 including :

• ICAP mode
• Separate process to manage workers
• Smaller, faster core reactor (only moving data around and with internal IPC API)
• Improvement: automatically pick the best reactor by default
• kqueue reactor on BSD
• exaproxy.http.mask to remove the presence of any previous proxy
• Forked children managed by a dedicated process (as Squid wants to do)