Merge pull request #1 from UCDS/master

Accept the Logo changes to Granthalay
Merge pull request #2 from UCDS/master

#C1 - added a new field called reading level to bibliography
#C1b - added comments
#C1c - added git documentation in README.md
#C2 Feature to add barcode number to checkout history report
Merge pull request #6 from ganeshbandhu/master

Accept #C2 changes