Updated the name of the class PushTests from it's former name BasicTests.
Updated the name of the class PushTests from it's former name BasicTests.

Signed-off-by: Adam Yeager <2dae21595e347cbad7952835530dcb38057a5bdf@gmail.com>

adamyeager/PushbulletSharp,DriesPeeters/PushbulletSharp