Update README.rst

Added PIP install command because previously there was no information on how to install it
Update README.rst

Sudo removed to be OS neutral. Considered putting superuser reminder but decided it was not necessary.
Updated to CKEditor 4.4.6
Check for jQuery presence correctly.
Add doctype to template.
Merge pull request #151 from dessibelle/master

Updated to CKEditor 4.4.6
Fix tests for newer ckeditor version.
Bump version.
Merge pull request #149 from b2550/patch-1

Update README.rst
[close #156] Update Readme.
Merge remote-tracking branch 'upstream/master'