add: README.md

README.md

+# openmole-com
+
+This repository contains the communication materials of the OpenMOLE project.
+
+Most of them are presentations given at various events.
+
+The slides are designed using different presentation frameworks, mostly HTML5 (Reveal.js, Impress.js).
+
+When cloning, don't forget to init/update the submodules to the release of Reveal.js.
+
+- to get a fresh clone
+
+  `git clone --recursive https://github.com/openmole/openmole-com.git`
+  
+- or on an existing clone
+
+  `git submodule update --init`
+  
+If you spot any mistake/typos, pull requests are welcome :)