chore(package): update backbone to version 1.3.2
chore(package): update backbone to version 1.3.2

http://greenkeeper.io/
Offirmo/html_tests,Offirmo/html_tests,Offirmo/html_tests,Offirmo/html_tests,Offirmo/web-tech-experiments,Offirmo/web-tech-experiments,Offirmo/web-tech-experiments,Offirmo/html_tests,Offirmo/web-tech-experiments