Added attribution url & changed plugin header

Added an attribution url to the license html frontend. Working on adding
a warning text on all non-singular pages so people can see that the
current displayed license may be overridden by the individual content.
Fixed #17 Typo caused popup not to close correctly

After adding the locale I made a typo which concatenated the url
parameter exit_url with the selected locale.
Fixed #16 Added warning at site/network settings

I've added a warning text at the site and network settings that changing
the settings here will relicense content. For instance if a site admin
decides that he/she does not want users to have the ability to change
the license of their content, the previously written content will
automatically be relicensed to the site's default license. We need to
have a look at this with feedback from people using the plugin to see if
this approach is the right one.
Removed jurisdiction param & add warning text

By removing the jurisdiction url param we get the CC 4.0 licenses
instead of the CC 3.0 licenses. Also started with adding a function to
deal with adding a warning text about the scope of a license
Updated plugin descriptions.
Rewording of the warning on license settings page.
Added author name to license widget display, but need to figure out how to handle
site/network case, as there "author name" is not easy to define.
Merge branch 'develop' of github.com:tarmot/wp-cc-plugin into develop
Renamed files and references to use WPLicense

Either use WPLicense or all lowercase wplicense for this plugin.
Fixed js with new location

Forgot to change the location of the admin.js file
Removed the old author url

Make it more clear that I am responsible for the rewrite. Credit to the
authors of the forked plugin has and will be maintained in the readme.
Renamed widget

Forgot to rename the widget files & references to use WPLicense instead
of license.
Bumped version to 2.0

Due to renaming the plugin to wplicense it will think it's the same as
the plugin developed by Nathan Yergler, which has the same name.
Therefor I need to use a version at least higher than 1.22 to prevent
update messages. For now I have updated the plugin to 2.0
Add content filter to display per item license

Using this code we will display the license of each individual item on a
multiple items page
Changed readme & version for first alpha release

Our first release of the WPLicense plugin. It is not recommended for
production yet and should be considered unstable. This release is aimed
at testers to gather more feedback and fix bugs. So yes, this release
will be buggy.