Merge branch 'miniforge' into 'master'

Mention miniforge for power and arm

See merge request inducer/pyopencl!107

doc/misc.rst

@@ -11,7 +11,9 @@ package manager.
 
 On Linux or OS X, the following set of instructions should work:
 
-#.  Install a version of `miniconda <https://conda.io/miniconda.html>`_
+#.  Install a version of
+    `miniforge <https://github.com/conda-forge/miniforge#miniforge3>`_
+    or `miniconda <https://conda.io/miniconda.html>`_
     that fits your system. Both Python 2 and Python 3 work.
     You can install these pieces of software in your user account and
     do not need root/administrator privileges.