Add more instructions

Author: Steven Silvester

RELEASE.md

@@ -1,8 +1,24 @@
 # Making a Release of Notebook
 
+## Start from a fresh git checkout and conda environment
+
+### Set the release branch
+
+```bash
+export release_branch=master
+```
+
+```bash
+git clone [email protected]:jupyter/notebook.git
+cd notebook
+git checkout ${release_banch}
+conda create -n notebook-release -c conda-forge jupyter
+conda activate notebook-release
+```
+
 ## Perform a local dev install
 
-`pip install -e .`
+`pip install -ve .`
 
 ## Install release dependencies
 
@@ -33,10 +49,11 @@ python setup.py bdist_wheel
 
 ## Change back to dev version
 
-```
+```bash
 vim notebook/_version.py
 git commit -am "Back to dev version"
 ```
 
 ## Push the commits and tags
-git push <remote> <branch> --tags
+
+`git push origin ${release_branch} --tags`