Update strings.xml

As provided by mahmood saqba
add russian translation as provided by Roman
fix path traversal vulnerability as reported by http://blog.k3170makan.com/2014/02/path-disclosure-vulnerability-in-io.html
Added license and notice in readme.
Merge pull request #48 from veniosg/master

Licence additions
Merge pull request #1 from openintents/master

Update