Update README.md

README.md

@@ -9,12 +9,12 @@ Mini-workshop/tutorial on design of microfabrication layout patterning masks.
 ## Optional software (strongly encouraged)
 -  Text editor with syntax highlithing and whatever goodies you need for programming (e.g. [Atom](https://atom.io), Emacs, Vim,...)
 -  Python 3 + Pip + Packages
-  -  Windows: Follow [these](https://phoenixnap.com/kb/how-to-install-python-3-windows) instructions up to step 5.
-  -  Mac OS/Linux: Usually comes pre-installed only with Python 2. Use package manager of your liking (e.g. [Homebrew](https://brew.sh) on Mac, [APT-GET](https://phoenixnap.com/kb/how-to-use-apt-get-commands) on Linux) to install Python 3.
+    -  Windows: Follow [these](https://phoenixnap.com/kb/how-to-install-python-3-windows) instructions up to step 5.
+    -  Mac OS/Linux: Usually comes pre-installed only with Python 2. Use package manager of your liking (e.g. [Homebrew](https://brew.sh) on Mac, [APT-GET](https://phoenixnap.com/kb/how-to-use-apt-get-commands) on Linux) to install Python 3.
     - gdspy
         - Documentation [here](https://gdspy.readthedocs.io/en/stable/gettingstarted.html)
         - Install using Pip: `python3 -m pip install gdspy` in command line/terminal
     - tkinter
-      - Optional, used for real-time-ish visualization of patterns.
-      - Documentation [here](https://docs.python.org/3/library/tkinter.html)
-      - Install using Pip: `python3 -m pip install tk` in command line/terminal
+        - Optional, used for real-time-ish visualization of patterns.
+        - Documentation [here](https://docs.python.org/3/library/tkinter.html)
+        - Install using Pip: `python3 -m pip install tk` in command line/terminal