Changed Access Modifiers for Ids.java, as has to be accessed outside the package.
added queue.destroy() method in test method testPostMultipleMessagesAndIdsShouldNotBeNull
Merge pull request #43 from stkaushal/master

Public access modifier for IDs.java
add one more model for keystone
remove models for keystone v3
add hardcoded support of keystone 2 token obtaining
add long polling support
Merge branch 'master' into v3

Conflicts:
	src/main/java/io/iron/ironmq/Queue.java
fix a bug
Merge branch 'v3' into keystone
remove deprecated method
Merge branch 'v3' into keystone
extract all data to iron.json, add test