[RELEASE] Set version to 0.2.0 (#107)

Also update the CONTRIBUTING guide about the creation of the Pull Request that updates the version.

Author: oanesini

CONTRIBUTING.md

@@ -147,7 +147,8 @@ Check that the files are using the version to be released:
 - [DESCRIPTION](./DESCRIPTION)
 - [README](./README.md)
 
-Create a new PR and merge it, if some files require changes. The PR/commit message should be `[RELEASE] Set version to x.y.z`.
+Create a new PR (it must have the `skip-changelog` label as we don't want it to appear in the release notes) and merge it,
+if some files require changes. The PR/commit message should be `[RELEASE] Set version to x.y.z`.
 
 #### GitHub issues and milestones update
 

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: bpmnVisualization
 Type: Package
 Title: Visualize Process Execution Data on BPMN Diagrams
-Version: 0.1.2
+Version: 0.2.0
 Authors@R: c(person("Celine", "Souchet", role = c("aut", "cre"), email = "celine.souchet@bonitasoft.com"),
              person("Thomas", "Bouffard", role = "aut"))
 Description: To visualize the execution data of the processes on BPMN diagrams, using overlays, style customization and interactions, with BPMN Visualization.

README.md

@@ -39,7 +39,7 @@ install.packages('devtools')
 
 To install a dedicated version (available versions can be found in the [GitHub releases page](https://github.com/process-analytics/bpmn-visualization-R/releases)), run:
 ```r
-devtools::install_github("process-analytics/bpmn-visualization-R@v0.1.2")
+devtools::install_github("process-analytics/bpmn-visualization-R@v0.2.0")
 ```
 
 Or install the development version: