add PressAndHoldable
released Scaloid 3.3
start building Scaloid 3.4
Cross build with Scala 2.10.4

Enable SBT cross build [1]

To build against all versions, prefix the action to run with `+` like:

`> + publish`

[1] http://www.scala-sbt.org/0.13.2/docs/Detailed-Topics/Cross-Build.html
Set default Scala version to 2.10.4
Merge pull request #80 from guersam/tmp/cross-build

Cross build with Scala 2.10.4
PressAndHoldable.onPressAndHold() is returning the basis
Update README.md
Change minimum supported version of Android API Level to 10 (2.3.3)
Release 3.4
Prepare for next development iteration