[DOC] new readme for the doc

docs/README.md

@@ -2,13 +2,16 @@
 
 :mega: This is the starting point for the documentation of the NARPS open pipelines project.
 
-Here are the available topics :
-
-* :runner: [running](/docs/running.md) tells you how to run pipelines in NARPS open pipelines
-* :brain: [data](/docs/data.md) contains instructions to handle the data needed by the project
-* :hammer_and_wrench: [environment](/docs/environment.md) contains instructions to handle the software environment needed by the project
-* :goggles: [description](/docs/description.md) tells you how to get convenient descriptions of the pipelines, as written by the teams involved in NARPS.
-* :microscope: [testing](/docs/testing.md) details the testing features of the project, i.e.: how is the code tested ?
-* :package: [ci-cd](/docs/ci-cd.md) contains the information on how continuous integration and delivery (knowned as CI/CD) is set up.
-* :writing_hand: [pipeline](/docs/pipelines.md) tells you all you need to know in order to write pipelines
-* :vertical_traffic_light: [status](/docs/status.md) contains the information on how to get the work progress status for a pipeline.
+## Use the project
+* :brain: [data](/docs/data.md) - handle the data needed by the project
+* :hammer_and_wrench: [environment](/docs/environment.md) - handle the software environment needed by the project
+* :rocket: [running](/docs/running.md) - launch pipelines in NARPS open pipelines
+
+## Contribute to the code
+* :goggles: [description](/docs/description.md) - conveniently access descriptions of the pipelines, as written by the teams involved in NARPS.
+* :writing_hand: [pipeline](/docs/pipelines.md) - how to write pipelines.
+
+## Main
+* :vertical_traffic_light: [status](/docs/status.md) - work progress status for a pipeline.
+* :microscope: [testing](/docs/testing.md) - testing features of the project, i.e.: how is the code tested ?
+* :package: [ci-cd](/docs/ci-cd.md) - how continuous integration and delivery (knowned as CI/CD) is set up.