corrected the errors in stateNames.sh and moved it to toplevel directory. Added -p field to topojson.sh to extract property fields from all the states in geojson.
added script to get topojson of just one state
changed script to simplify code and also delete unecessarily created intermidiate files
modified all the topojson files to include states
Merge pull request #1 from ranjaykrishna/master

Modified code.