[README] Compilation instructions

README.md

 # sot-talos-balance
 
-Coordination project for the control of the balance of Talos.
\ No newline at end of file
+Coordination project for the control of the balance of Talos.
+
+## Installation procedure
+Assuming you have all the dependencies correctly installed inside `/opt/openrobots`,
+the package is installed as follows:
+
+```
+git clone --recursive git@gepgitlab.laas.fr:loco-3d/sot-talos-balance.git
+cd sot-talos-balance
+mkdir build
+cd build
+cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=/opt/openrobots ..
+make -j4
+make install
+```
+