[Fiware-middleware] Instructions and adoption for Maven Central

[Marti Christof (mach)]

Hi

Maven Central accepted our request for the “org.fiware.kiara" group-id.
I updated the KIARA project (build.gradle, pom.xml) to support uploads of
the artefacts to the repository.
You’ll find the instructions in the CONTRIBUTE.md document
https://github.com/FIWARE-Middleware/KIARA/blob/master/CONTRIBUTE.md.

I still have to adopt the changes to kiaragen and IDL-Parser.

To meet the conditions of Maven Central, also the javadoc and source 
archives have to be built and signed.
There are still warnings, when creating the javadocs. I fixed the errors.
Most important: In javadoc headers the standard email address format 
(e.g.<mach at zhaw.ch>) is not allowed, because it conflicts with the
HTML syntax. Three options:
- remove email address from @author entry
- write the email as valid HTML links "<a href=“mailto:mach at zhaw.ch”>mach at zhaw.ch</a>
- mark it as literal: @literal{<mach at zhaw.ch>}
I fixed the current errors by adding the @literal{} to the email address.

Best regards
Christof
----
InIT Cloud Computing Lab - ICCLab http://blog.zhaw.ch/icclab
Institut of Applied Information Technology - InIT
Zurich University of Applied Sciences - ZHAW
School of Engineering 
Phone: +41 58 934 70 63
Skype: christof-marti