Add better doc on how to change workflow_dir var. #4

 Better description on how the user can change which matflow workflow they would like to post-process

post-processing_example.ipynb

@@ -35,12 +35,11 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "A Jupyter notebook with crystal plasticity model post-processing examples.\n",
     "\n",
-    "First, specify the workflow you would like to post-process by changing the path string of the `workflow` variable.\n",
+    "Specify the workflow and therefore simulation results you would like to post-process by changing the path string of the `workflow_dir` variable in the cell below. This should point to the directory containing the `workflow.hdf5` file where the matflow simulation results have been saved following a successfully run matflow-damask workflow.\n",
     "\n",
-    "This runtime of this cell depends on the size of the `workflow.hdf5` file contained within your workflow directory.\n",
-    "20Gbs can take up to 2mins to load."
+    "The runtime of this cell depends on the size of the `workflow.hdf5` file contained within your workflow directory.\n",
+    "**20Gbs can take up to 2mins to load**."
    ]
   },
   {