Added Try-catch block

There was an unhandled exception in the case of a user not having any
program associated with the *.ps1 file type.
Fix for Bug 1 (Unhandled Exception)

This fixes bug https://github.com/PoshSec/PoshSecFramework/issues/1 with
the unhandled exception. It will now check at both the double click
function and the initializescript before attempting to reinitialize the
runspace.
Removed Unnecessary check for ScriptDefaultAction

The scriptdefaultaction will never be null so this check is not needed.
The Beltface "apt-get update" Addition

Added apt-get update which will launch wuapp for Windows Updates. More
of an easter egg than anything else.
Fix for Ctrl+C.

The cursor was being moved for CTRL+C when it should only be moved for
CTRL+V.
Merge branch 'development' of https://github.com/PoshSec/PoshSecFramework into development
ShiftKey Handler so it doesn't change position.

The shift key was causing the cursor to move.
Missing Changes - Updating Repository

Apparently some changes were missed with the DerbyCon commit from my
private repository. This is fixing those missed changes.
Merge pull request #3 from PoshSec/development

Merging the development branch with master.