Add a README.md in community

README.md

+# Bonita Studio
+
+This repository contains the source code of the Bonita Studio component from the Bonita tool suite.  
+In order to build this repository it is required to build its dependencies. To help you achieve this there is a dedicated repository [here](https://github.com/Bonitasoft-Community/Build-Bonita).
+
+## Run build
+
+Bonita Studio is an Eclipse RCP. It relies on a custom Eclipse **target platform**.  
+Those target platforms are available here [http://update-site.bonitasoft.com/p2](http://update-site.bonitasoft.com/p2).
+
+`./mvnw package -DskipTests -Pmirrored -Dp2MirrorUrl=http://update-site.bonitasoft.com/p2/7.7`
+
+### Built artifacts
+
+* Windows and Linux all-in-one archive is located here `all-in-one/target/BonitaStudioCommunity-*.zip`
+* MacOs app is located here `products/org.bonitasoft.studio.product/macosx/cocoa/x86_64`
+
+## Report issues
+
+If you want to report an issue or a bug use our [official bugtracker](https://bonita.atlassian.net/projects/BBPMC)
\ No newline at end of file