Merge pull request #1 from rorist/master

Add README file

@rorist so long and thanks for the fish!
Connect instance to a single available network by default
Merge branch 'master' of github.com:ctrlaltdel/cloud
match --flavor as a substring
refactor network setup
Add rackspace cloud support
refactor block device management
trigger README markdown rendering on github
summary
Use neutron API to discover available networks
dependencies