Intialisation and Adding errors quickstart

After discussion in https://github.com/jboss-fuse/fuse/pull/36 it was decided to start a fresh repo for Fuse quickstarts. So this repository will contain JDF compliant version of Fuse Example. 

This PR proposes the "errors" quickstart in compliance with JDF guidelines and convention found in https://github.com/jboss-jdf/jboss-as-quickstart/blob/master/CONTRIBUTING.md#general-guidelines (Except for the BOM part that'll come in a second time).
For "errors" example it is mainly:

* renaming packages to org.jboss.quickstarts.fuse.errors
* reformatting code to follow JBoss code style
* moving example data to src/main/resources folder
* put the right licence in each file and in pom.xml
* modify documentation to use the sections than in https://github.com/jboss-jdf/jboss-as-quickstart/blob/master/template/README.md 
* optimizing pom to meet all JDF guidelines (except BOM requirement)
* running JDF qstools (https://github.com/jboss-jdf/qstools) to validate compliance

This PR also adds documentation template from https://github.com/jboss-jdf/jboss-as-quickstart