hotfix for package.json less@1.7.2

less@1.7.2 is no longer avilable on npm registry
upgraded less package to 1.7.3 so that npm install does not crash
Hotfix version for less upgrade
Incremented version from 1.0.34 to 1.0.35
Merge pull request #5 from RexK/master

npm install failed due to less@1.7.2