Merge pull request NCAR#111 from TeaganKing/ipykernel_fix

Update README.md to include fix for ipykernel issue

README.md

@@ -67,6 +67,14 @@ $ cupid-build  # Will build HTML from Jupyter Book
 After the last step is finished, you can use Jupyter to view generated notebooks in `${CUPID_ROOT}/examples/coupled-model/computed_notebooks/quick-run`
 or you can view `${CUPID_ROOT}/examples/coupled-model/computed_notebooks/quick-run/_build/html/index.html` in a web browser.
 
+Notes:
+
+1. Occasionally users report the following error the first time they run CUPiD: `Environment cupid-analysis specified for <YOUR-NOTEBOOK>.ipynb could not be found`. The fix for this is the following:
+   ``` bash
+   $ conda activate cupid-analysis
+   (cupid-analysis) $ python -m ipykernel install --user --name=cupid-analysis
+   ```
+
 Furthermore, to clear the `computed_notebooks` folder which was generated by the `cupid-run` and `cupid-build` commands, you can run the following command:
 
 ``` bash