Starting with Java 7u9 I think JavaFX is shipped together with Java SE runtime and the rest, so it makes it pretty easy to create a Maven-based JavaFX project.
Here is what you do (assuming you have latest Java SE 7 runtime environment):
Go to directory where your JRE libs are installed: cd "/c/Program
Files/Java/jre7/lib"
Find what is the version of the JavaFX by reading the javafx.properties file. cat javafx.properties
will produce something like: javafx.runtime.version=2.2.3
Now you are ready to install the JavaFX runtime package to Maven: mvn install:install-file -Dfile=jfxrt.jar -DgroupId=com.oracle -DartifactId=javafx -Dpackaging=jar -Dversion=2.2.3
Finally, create a simple Maven project, in say NetBeans, open your pom.xml file and add the following dependency:
<dependency>
<groupId>com.oracle</groupId>
<artifactId>javafx</artifactId>
<version>2.2.3</version>
</dependency>
Once you save the pom.xml you can continue using your typical Maven workflow.
Please note I used the MSYS (http://www.mingw.org) environment on Windows in the examples above in the case you get confused. If you prefer Windows CMD it would be very much similar. I just do not feel comfortable without BASH and GNU tools such as sed, grep, etc...