Fixed a bug with the uri path being encoded

- Fixes #28
Finalized release date
Merge branch 'develop'
Updated tracker core version
Check for a HttpResponse if it returns null

- We now check if we don't get a response before we try to retrieve a
  status code from it. This fixes a serious issue with the tracker
  crashing on network failure attempts.
- Fixes #32
- Closes #33 since the update to a newer version is already done
Update CHANGELOG
Updated completePayload to take timestamp as a long (closes #35)
Updated auto-generated Version
Merge branch 'hotfix/0.1.3'
Finalized date
Added dedicated Vagrant setup (closes #40)
Bumped Core version to 0.2.0 (closes 42)
Updated CHANGELOG with missing tickets (closes #41)
Updated auto-generated Version
Added warning that Version.java is auto-generated (closes #45)
Added Quickstart section to README (closes #43)
add Log in thr Emitter GET and POST

It's better for debugging to know what data sent from the app
Added GET and POST logging in the Emitter, thanks @lixiaoyi! (closes #38)
Update to latest gradle tools and plugin
Remove unnecessary dependencies

Conflicts:
	snowplow-android-tracker/build.gradle