Fix pathes

[sandro-k]

Right now the repository contains two aha-table files on in dist and one in src. If you want to test the src version with you current elements you have to alter the path of the src aha-table element to polymer.
With the usage of a custom .bowerrc file in you working directory the path to polymer in the src aha-table can be identical an you can still set up you debugging environment:

mkdir aha-wrapper
cd aha-wrapper
git clone https://github.com/liuwenchao/aha-table.git
cp debug.bowerrc .bowerrc
bower install