Changing the order of copy and iNSERT 

Changing the order of copy and iNSERT for mongoDB and PostgreSQL
Changing the version of tool

Changed the version number in pg_nosql_benchmark. 
This version has following fixes:
1. Make sure Same data set will be used for SELECT.
2. Fixed failure of  some MongoDB Inserts which were failing due to limitation of mongo shell.
Merge pull request #2 from vibhorkum/patch-1

Changing the order of copy and INSERT.

Also incremented the version number to go with the change in expected
performance difference between MongoDB and Postgres.