Fix for Tooltips for Unity 4.2

Unity v4.3 fixed an issue where "Editor: PropertyDrawers can now call
EditorGUI.PropertyField to get the default implementation instead of
getting infinite recursion."
(http://unity3d.com/unity/whats-new/unity-4.3).
Added work around for previous versions that doesn’t use
EditorGUI.PropertyField

Fixes #3
Method conflicts with System.Net package

Method is not used yet so removing until a fix can be found.
Updated package with code changes

Contains:
- Fix for tooltips in v4.2
- Removes unused method ‘send’ until conflict with System.Net is
resolved.