install dependencies in a different order

Author: sbillinge

Diff for: README.rst

@@ -95,7 +95,8 @@ macOS (Arm64)
 
 Create a new conda environment ``diffpy.pdfgui_env``: ::
 
-        conda create -n diffpy.pdfgui_env python=3.13
+       conda config --add channels conda-forge
+       conda create -n diffpy.pdfgui_env python=3.13
 
 Activate the environment: ::
 
@@ -104,15 +105,11 @@ Activate the environment: ::
 It is necessary to get versions of pdffit2 built for Mac from Python package index (Pypi).  To install
 pdffit2 from Pypi using ``pip`` to download and install the latest version from `Python Package Index <https://pypi.python.org>`_: ::
 
+        conda install wxpython diffpy.utils diffpy.structure matplotlib-base pycifrw numpy
         pip install diffpy.pdffit2
 
-Confirm that the installation was successful: ::
-
-        python -c "import diffpy.pdffit2; print(diffpy.pdffit2.__version__)"
-
-Now we want to install PDFgui and dependencies from conda-forge: ::
+Now we want to install PDFgui from conda-forge: ::
 
-        conda install wxpython diffpy.utils matplotlib-base
         conda install diffpy.pdfgui --no-deps