Changes are to fix issues arising from executing code of previous commit.
1. Fixing import statements from previous commit.
2. Adding FEC data
3. Adding co-membership_of_committees.txt containing edge list for Snap graph
4. Adding info-pngraph.txt to .gitignore. This is a generated file created each time you run neeral_analyse_graph.py

New feature: adding plot of bill success against $ spend by bill (NOT legislator) to neeral_analyse_graph.py
Files omitted from previous commit.