Update WS documentation to use the Action.async builder.
Merge pull request #1730 from sluukkonen/patch-2

Update WS documentation to use the Action.async builder.
Added copyright statements to every file
Merge pull request #1733 from jroper/copyright

Added copyright statements to every file
Fixed MIMA

Just applying the fixes that I did on the 2.2.x branch to master, so
when we fork 2.3.x, it will be easy to enable MIMA.
Upgrade to Scala 2.10.3-RC3 and check iteratee memory leak is fixed

Scala 2.10.3 inclues a fix that allows memory to be freed when chaining
Future.flatMap calls (SI-7336). Iteratees make extensive use of
Future.flatMap, so upgrading to Scala 2.10.3 allows us to avoid memory
leaks when using iteratees (#1084). Memory leaks can occur when
processing large amounts of data or when working with connections that
can remain open for a long time.
Merge pull request #1735 from richdougherty/scala-upgrade-leak-fix

Upgrade to Scala 2.10.3-RC3 and check iteratee memory leak is fixed
Update email validation regex
Merge pull request #1738 from gmethvin/email

Update email validation regex
Updated contributor guidelines
Merge remote-tracking branch: upstream/master