Update README.md to add TODO

Added a TODO at the end of the README.md file to add what's to come and
als my thoughts going forward. Also some other minor changes to the
current README.md.

README.md

@@ -1,6 +1,6 @@
 # SpacEscape2D
 #### Created by Abheek Dhawan
-SpacEscape2D is a simple 2D game centered around controlling a rocket while avoiding asteroids. It was created in `Godot` and is the newer version of a 3D game I made in `Unity`
+SpacEscape2D is a simple 2D game centered around controlling a rocket while avoiding asteroids. It was created using the `Godot Engine` and is the newer version of a 3D game I made in the `Unity Engine`.
 
 #### Current and planned supported operating systems:
 - [x] HTML
@@ -10,3 +10,12 @@ SpacEscape2D is a simple 2D game centered around controlling a rocket while avoi
 - [ ] Android
 - [ ] iOS
 - [ ] Raspberry Pi (deb)
+
+## TODO
+Currently the game is lacking a few features which are still in development:
+- Game saves
+- Coins/currency
+- Powerups
+I am also working on a "story mode," which incorporates different powerups and such and works kind of like a step-by-step introduction to all of the elements in the game (most of which have not been added yet). I am also trying to figure out a workflow in which I can add a `beta` branch to `GitHub` in order to introduce some new features beforehand so that they can be tested out.
+
+# Thanks for checking out my game!