doc: cleanup install/usage documentation in quickstart

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>

Author: acerv

doc/users/quickstart.rst

@@ -3,68 +3,62 @@
 Start using kirk
 ================
 
-The tool works out of the box by running `kirk` script.
+The tool works out of the box by running ``kirk`` script.
 Minimum python requirement is 3.6+ and *optional* dependences are the following:
 
 - `asyncssh <https://pypi.org/project/asyncssh/>`_ for SSH support
 - `msgpack <https://pypi.org/project/msgpack/>`_ for LTX support
 
-`kirk` will detect if dependences are installed and activate the corresponding
-support. If no dependences are provided by the OS's package manager,
-`virtualenv` can be used to install them:
+kirk will detect if dependences are installed and activate the corresponding
+support.
+
+To use kirk via git repository:
 
 .. code-block:: bash
 
-    # download source code
     git clone git@github.com:acerv/kirk.git
-    cd kirk
-
-    # create your virtual environment (python-3.6+)
-    virtualenv .venv
+    export PATH=$PATH:$PWD/kirk
 
-    # activate virtualenv
-    source .venv/bin/activate
+    kirk --help
 
-    # SSH support
-    pip install asyncssh
+kirk is also present in `pypi <https://pypi.org/project/kirk>`_ and it can be
+installed via ``pip`` command:
 
-    # LTX support
-    pip install msgpack
+.. code-block:: bash
 
-    # run kirk
-    ./kirk --help
+   pip install --user kirk
 
 Some basic commands are the following:
 
 .. code-block:: bash
 
     # run LTP syscalls testing suite on host
-    ./kirk --run-suite syscalls
+    kirk --run-suite syscalls
 
     # run LTP syscalls testing suite on qemu VM
-    ./kirk --sut qemu:image=folder/image.qcow2:user=root:password=root \
+    kirk --sut qemu:image=folder/image.qcow2:user=root:password=root \
            --run-suite syscalls
 
     # run LTP syscalls testing suite via SSH
-    ./kirk --sut ssh:host=myhost.com:user=root:key_file=myhost_id_rsa \
+    kirk --sut ssh:host=myhost.com:user=root:key_file=myhost_id_rsa \
            --run-suite syscalls
 
     # run LTP syscalls testing suite in parallel on host using 16 workers
-    ./kirk --run-suite syscalls --workers 16
+    kirk --run-suite syscalls --workers 16
 
     # run LTP syscalls testing suite in parallel via SSH using 16 workers
-    ./kirk --sut ssh:host=myhost.com:user=root:key_file=myhost_id_rsa \
+    kirk --sut ssh:host=myhost.com:user=root:key_file=myhost_id_rsa \
            --run-suite syscalls --workers 16
 
     # pass environment variables (list of key=value separated by ':')
-    ./kirk --run-suite net.features \
+    kirk --run-suite net.features \
            --env 'VIRT_PERF_THRESHOLD=180:LTP_NET_FEATURES_IGNORE_PERFORMANCE_FAILURE=1'
 
 It's possible to run a single command before running testing suites using
-`--run-command` option as following:
+``--run-command`` option as following:
 
 .. code-block:: bash
 
-    ./kirk --run-command /mnt/setup.sh \
+    kirk --run-command ./setup_sut.sh \
            --sut qemu:image=folder/image.qcow