Fix requirements.txt for pip 1.5
README: angular branch is merged, link to virtualenv
README: add instructions for virtualenvwrapper
Add script to install system-wide packages
Add bootstrap script to setup repositories
Add Vagrantfile to spin up and provision a VM
Vagrantfile; sync repository folders to VM
README: Add instructions for creating a VM
README: add grunt-cli to installation instructions
Run grunt server on host 0.0.0.0
README: instructions for running API server accessible from outside
Add grunt-cli to install script
README: make sure virtualenv is active
Merge pull request #3 from taarifa/vagrant

Vagrantfile and instructions for provisioning VM
Correct setup instructions
Small cleanups
README: added cd to TaarifaWaterpoints folder
Add statistics endpoint /api/waterpoints/stats

Returns number of waterpoints of a given status in a given district
Add statistics endpoint /api/waterpoints/stats_by_district

Return number of waterpoints of a given status for each district
Use Eve's send_response for custom endpoints

This returns the proper response format, add adds headers according
to Eve's configuration e.g. CORS.