used tabs for the install info (#6013)

docs/src/installing.rst

@@ -19,45 +19,48 @@ Iris can be installed using conda or pip.
 .. note:: This documentation was built using Python |python_version|.
 
 
-.. _installing_using_conda:
+.. _installing_a_released_version:
 
-Installing a Released Version Using Conda
------------------------------------------
+Installing a Released Version
+-----------------------------
 
-To install Iris using conda, you must first download and install conda,
-for example from https://docs.conda.io/en/latest/miniconda.html.
+.. tab-set::
 
-Once conda is installed, you can install Iris using conda with the following
-command::
+ .. tab-item:: conda-forge
 
- conda install -c conda-forge iris
+ To install Iris using conda, you must first download and install conda,
+ for example from https://docs.conda.io/en/latest/miniconda.html.
 
-If you wish to run any of the code in the gallery you will also
-need the Iris sample data. This can also be installed using conda::
+ Once conda is installed, you can install Iris using conda with the following
+ command::
 
- conda install -c conda-forge iris-sample-data
+  conda install -c conda-forge iris
 
-Further documentation on using conda and the features it provides can be found
-at https://docs.conda.io/projects/conda/en/latest/index.html.
+ If you wish to run any of the code in the gallery you will also
+ need the Iris sample data. This can also be installed using conda::
 
-.. _installing_using_pip:
+ conda install -c conda-forge iris-sample-data
 
-Installing a Released Version Using Pip
----------------------------------------
+ Further documentation on using conda and the features it provides can be found
+ at https://docs.conda.io/projects/conda/en/latest/index.html.
 
-Iris is also available from https://pypi.org/ so can be installed with ``pip``::
+ .. tab-item:: PyPI
 
- pip install scitools-iris
+ Iris is also available from https://pypi.org/ so can be installed with ``pip``::
+
+ pip install scitools-iris
+
+ If you wish to run any of the code in the gallery you will also
+ need the Iris sample data. This can also be installed using pip::
+
+ pip install iris-sample-data
 
-If you wish to run any of the code in the gallery you will also
-need the Iris sample data. This can also be installed using pip::
 
- pip install iris-sample-data
 
 .. _installing_from_source:
 
-Installing a Development Version from a Git Checkout
-----------------------------------------------------
+Installing a Development Version
+--------------------------------
 
 The latest Iris source release is available from
 https://github.com/SciTools/iris.