openlayers/ol3 — pull request #1034 by marcjansen (2013-09-18 11:27:54+00:00)
Title: Add a help-target to build.py.

This is the output of `build.py help` on my machine:

```
build.py - The OpenLayers 3 build script.

Usage:
./build.py [options] [target] (on Unix-based machines)
build.py [options] [target] (on Windows machines)

There is one option:
-c - Cleans up the repository from previous builds.

The most common targets are:
serve - Serves files through plovr, usually on port 9810.
lint - Runs gjslint on all sourcefiles to enforce specific syntax.
build - Builds singlefile versions of OpenLayers JavaScript and
CSS.
test - Runs the testsuite and displays the results.
check - Runs the lint-target, builds some OpenLayers files, and
then runs test. Many developers call this target often
while working on the code.
help - Shows this help.

Other less frequently used targets are:
doc - Builds the API-Documentation using JSDoc3.
integration-test - Builds all examples in various modes and usually tales a
long time to finish. This target calls the following
targets: lint, build, build-all, test, build-examples,
check-examples and doc.
reallyclean - Remove untracked files from the repository.
checkdeps - Checks whether all required development software is
installed on your machine.
fixme - Will print a list of parts of the code that are marked
with either TODO or FIXME.
todo - is an alias for the fixme-target
plovr - Fetches the required plovr.jar. Usually called by other
targets that depend on plovr.

The above list is not complete, please see the sourceode for not-mentioned and
only seldomly called targets.
```

Please review and do not hesitate to comment on wording, grammar, described targets, etc.