Added aursearch.py

Filename: aursearch.py
Reason: Searches the Arch Linux AUR and prints out all the matching
results it finds, along with other information about each package.
Licensed under the GPL v3

Filename: LICENSE.txt
Reason: Text of the GPL v3
Added .gitattributes file

Filename: .gitattributes
Reason: Added to ensure line endings get handled properly
Updated README

Filename: README.md
Reason: Updated with more specific information about aursearch