Merge branch '8-add-some-information-in-readme-before-mirroring-on-github' into 'master'

Resolve "Add some information in README before mirroring on GitHub"

Closes #8

See merge request !6

README.md

+# RiseClipse
+## RiseClipse summary
+**RiseClipse** is an umbrella name for tools based on Model Driven Engineering (MDE) technologies and dedicated to [IEC](http://www.iec.ch/) standards. Open source **RiseClipse** components are availble under the [Eclipse Public License version 2.0](https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html). More information on **RiseClipse** is available [here](https://wdi.supelec.fr/software/RiseClipse/).
+
+## riseclipse-ocl-constraints-scl2003
+This repository contains OCL constraints for validating SCL models.