Iris citation added into user guide

docs/iris/src/userguide/citation.rst

@@ -0,0 +1,55 @@
+.. _Citing_Iris:
+
+===========
+Citing Iris
+===========
+
+If Iris played an important part in your research then please add us to your reference list by using one of the recommendations below.
+
+************
+BibTeX entry 
+************
+
+For example::
+
+ @manual{Iris,
+ author = {{Met Office}},
+ title = {Iris: A Python library for analysing and visualising meteorological and oceanographic data sets},
+ edition = {v1.2},
+ year = {2010 - 2013},
+ address = {Exeter, Devon },
+ url = {http://scitools.org.uk/}
+ } 
+
+
+*******************
+Downloaded Software
+*******************
+
+Suggested format::
+
+ ProductName. Version. ReleaseDate. Publisher. Location. DOIorURL. DownloadDate.
+
+For example::
+
+ Iris. v1.2. 28-Feb-2013. Met Office. UK. https://github.com/SciTools/iris/archive/v1.2.0.tar.gz 01-03-2013
+
+
+********************
+Checked out Software
+********************
+
+Suggested format::
+
+ ProductName. Publisher. URL. CheckoutDate. RepositorySpecificCheckoutInformation.
+
+For example::
+
+ Iris. Met Office. git@github.com:SciTools/iris.git 06-03-2013 
+
+.. _How to cite and describe software: http://software.ac.uk/so-exactly-what-software-did-you-use
+
+
+Reference: [Jackson]_.
+
+.. [Jackson] Jackson, M. 2012. `How to cite and describe software`_. Accessed 06-03-2013.

docs/iris/src/userguide/index.rst

@@ -32,4 +32,5 @@ User guide table of contents
    plotting_a_cube.rst
    cube_statistics.rst
    cube_maths.rst
+   citation.rst
    end_of_userguide.rst