update qilinguist documentation
update qilinguist documentation

Change-Id: Ia451df8fba974c75f7edcb2307711ac44693f2ca
Reviewed-on: http://gerrit.aldebaran.lan/35760
Reviewed-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran-robotics.com>
Tested-by: hcuche <2a0975cc082cedff4d4350e3f6ec187146151bc6@aldebaran-robotics.com>

vbarbaresi/libqi,aldebaran/libqi,bsautron/libqi,aldebaran/libqi,aldebaran/libqi