document all the command of the eCLAT client

[StefanoSalsano]

we need to add the documentation of the eCLAT client comments in readthedocs
and the put the reference to these documentation in the eclat-daemon Readme.md

eclat -q #closes the daemon

python eclat.py --load $1 --define DEVNAME $2 --package test

python eclat.py --fetch $1 --define DEVNAME $2 --package test