don't choke on version in package#version

Changes needed to support Django 1.10

  - Added Django 1.10 to travis CI
  - added a "fake" option_list attribute to BaseBowerCommand
    so accesing this code elewhere won't break (doesn't exist in Dj 1.10)
  - Added support for the new add_arguemnts api for management commands,
    it seems the two APIs can coexist fine.
  - Changed travis config so it prints stderr to console and uses tee to send copy to file `test_out`

Convert readthedocs links for their .org -> .io migration for hosted projects

As per [their blog post of the 27th April](https://blog.readthedocs.com/securing-subdomains/) ‘Securing subdomains’:

> Starting today, Read the Docs will start hosting projects from subdomains on the domain readthedocs.io, instead of on readthedocs.org. This change addresses some security concerns around site cookies while hosting user generated data on the same domain as our dashboard.

Test Plan: Manually visited all the links I’ve modified.

Add option to bower_install to be able to install packages as root

Test on Python 3.4, 3.5 and Django 1.9

Template tags to add bower installed files automatically.

#13 Sort the items returned in bower_freeze

Fix tests for Windows (literal path issues)

Skip Django checks for the commands

There is no needs for a working database for example to run this module commands.

Clean up BowerFinder, and don't crash when the Bower folder doesn't exist yet

Avoid OSError crash when BOWER_COMPONENTS_ROOT's parent directory doesn't exist

This should fix #48.

If BOWER_COMPONENTS_ROOT points to a path consisting of more than one
non-existent subdirectory, BowerAdapter.create_components_root() will
crash with a message like:

OSError: [Errno 2] No such file or directory: '/path/to/directory'

This fix replaces the os.mkdir() call with os.makedirs(), which will
create all the missing intermediate directories as needed.

Python 2.6 support for OrderedDict

Try to used collections.OrderedDict and if it is not available try to use ordereddict.OrderedDict

Add different Django versions to the Travis test matrix

Fix management command compatibility with Django 1.8

Fix deadlock in freeze

This deadlock was caused by Popen.wait() instead of
Popen.communicate().  The difference is that Popen.wait() will block
after the buffer is filled while Popen.communicate() will read all the
input.