update readme
update metabox script to v1.2.0
update version definition
Improve Custom Columns

Used `array_slice()` to insert the new columns instead of statically
defining all columns as done previously. This allows more flexibility
for users.

Fixes #4
Adds Testimonial Shortcode metabox

Adds an additional metabox to the Testimonial creation screen. This
metabox displays the proper shortcode for displaying just that
testimonial.

closes #3
Fix occasional WSOD

Previously some users were getting a WSOD when using the plugin. Adding
an absolute path to the filed has fixed that issue.
v1.0.2 prep for release
update version info and readme for v1.1.0
update phpdoc
Register Widget via Static Class Method

Previously this was done indirectly via pseudo namespace singleton,
however the method outlined
[here](http://lkwdwrd.com/register-widgets-static-method) offered a
superior approach

closes #6
Improve Readability of Metabox shortcode box

Previously the shortcode textbox on the Testimonial creation screen may
clip off the last couple characters. Adding `widefat` as a class to the
textbox grows the textbox

Closes #7
update phpdoc

clips the low-hanging fruit of the PHPDoc best practices for WordPress.
More improvements to come in the future.