Use the node binary from the PATH.

The new nodejs buildpack has changed the location of the node binary.
Using the PATH make the test pass on both buildpacks.
refs #371
Allow tests to have a setup phase.
Add a config test.
Merge pull request #373 from plietar/tests-hooks

Allow tests to have a setup phase.
Mention LTS support & additional instruction
added post-build hook
Print datestamp before doing anything

This lets easily see if Travis' "restart build" feature is working properly
README grammar

Some confused me as I was scrolling through the docs (missing pronouns) and others were more nit-picky.
do not exit when docker fails
Merge pull request #384 from colnpanic/features/notify-kill-failed

Ignore failures when trying to stop containers.
Merge pull request #381 from alexanderbeletsky/post-build

Add a post-build hook
For #313: Do not specify both `$APP` and `$IMAGE` for base commands.

As discussed in #313, dokku base commands such as build, release, and
deploy require specifying both `$APP` and `$IMAGE` as arguments where
`IMAGE="app/$APP"`. Thus, the `$IMAGE` parameter is currently redudant.

This patch removes the need to specify `$IMAGE` for these base commands
and is backwards compatible. If, in the future, the base commands expect
and `$IMAGE` different than `app/$APP`, then the `$IMAGE` parameter will
be re-added for those specific commands.
Merge pull request #321 from mikexstudios/remove-image-var

For #313: Do not specify both `$APP` and `$IMAGE` for base commands.
Merge pull request #382 from joliv/patch-1

README grammar
Update stable’s bootstrap command
Update dig command

Was changed in da11349e8149e0b5181dc2f5c9f4f7408ec624bb
Add Java test
Merge pull request #390 from rhy-jot/2013-12-20/java-test

Add Java test
notify user when pushing to non-master branch
Merge pull request #383 from colnpanic/features/notify-non-master-push

notify user when pushing to non-master branch