Apache License 2.0
The Apache License is a free software license authored by the Apache Software Foundation (ASF). The Apache License requires preservation of the copyright notice and disclaimer, but it is not a copyleft license — it allows use of the source code for the development of proprietary software as well as free and open source software. (From http://en.wikipedia.org/wiki/Apache_License)
http://www.apache.org/licenses/LICENSE-2.0.html
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