Add info to compile.

PG.

Com_server/ReadMe.md

@@ -4,6 +4,10 @@
 
 # drone-controlServer  #
 
+To install
+> cmake .
+> make
+
 ## Introduction ##
 
 The pixhawk service program is a simple application that allow user to communicate though Mavlink to a pixhawk flying controler. It use Blc channels, a lib to use shared memory make by a collegue, Arnaud Blanchard (See blaar lib).