Don't install extras by default when installing from conda.

Author: domdfcoding

README.rst

@@ -157,3 +157,9 @@ install `psutil <https://pypi.org/project/psutil/>`_ by specifying the ``termina
 .. code-block:: bash
 
 	$ python -m pip install consolekit[terminals]
+
+or, if you installed ``consolekit`` through conda:
+
+.. code-block:: bash
+
+	$ conda install -c conda-forge psutil

doc-source/index.rst

@@ -143,6 +143,12 @@ install `psutil <https://pypi.org/project/psutil/>`_ by specifying the ``termina
 
 	python -m pip install consolekit[terminals]
 
+or, if you installed ``consolekit`` through conda:
+
+.. prompt:: bash
+
+	conda install -c conda-forge psutil
+
 
 .. toctree::
 	:hidden:

repo_helper.yml

@@ -9,6 +9,9 @@ version: '1.1.0'
 license: 'MIT'
 short_desc: 'Additional utilities for click.'
 
+conda_extras:
+ - none
+
 python_versions:
   - 3.6
   - 3.7