Add the pom.xml file for RSyntaxTextArea 2.5.0 from Maven Central

I will adapt it in the next few commits.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Rename the pom.xml to the correct name

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Adjust pom.xml to 2.5.1

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Ignore Maven's output directory

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Add a simple script to download and deploy releases

The simple script downloads RSyntaxTextArea releases from SourceForge,
signs the artifacts and deploys them as Maven artifacts. Since
SourceForge's packages lack the Javadocs, we let Maven's Javadoc plugin
handle that.

The deploy command already knows OSS Sonatype; however, since we do
not yet have credentials to *actually* deploy there, the next commit
will revert this temporarily.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Deploy to the ImageJ Maven repository

This is hopefully only a temporary workaround, until we get the
credentials to deploy to OSS Sonatype.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Add a really minimal README

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>