Added Ant file to Android example to automatically download required jars.
Merge branch 'android'

* android:
  Added Ant file to Android example to automatically download required jars.
Log a warning when more than one IoC dependency is found in the classpath and Cucumber defaults to no IoCs.
Changes based on Aslak Hellesøy comments
Changing to strongly typed exceptions
Dispose line filters when feature paths are clobbered

Also dispose line filters when feature paths are clobbered with
-Dcucumber.options.
Merge #594. Remove wildcard import. Update History.md.