docs

doc/install.rst

@@ -12,10 +12,22 @@ Before we start
     source activate forcing
     conda install numpy netcdf4 configparser
 
-+ the ECMWF_ python API (needs registration, see howto_access_dataset_) and install with (check for updates)::
++ the ECMWF_ python API. You need to register and put obtained key in $HOME/.ecmwfapirc (see howto_access_dataset_).
+  Then install API with pip (check for updated version)::
 
     pip install https://software.ecmwf.int/wiki/download/attachments/56664858/ecmwf-api-client-python.tgz
 
++ cdo_ (available with most package managers)
+
+Install interimR
+^^^^^^^^^^^^^^^^
+
+Clone from github and run the install script::
+
+    git clone https://github.com/raphaeldussin/interimR.git
+    python setup.py install
+
 
 .. _ECMWF: https://www.ecmwf.int
 .. _howto_access_dataset: https://confluence.ecmwf.int/display/WEBAPI/Access+ECMWF+Public+Datasets
+.. _cdo: https://code.mpimet.mpg.de/projects/cdo/