Added build.bat and instructions for building on Windows

.gitignore

@@ -1 +1,2 @@
 *.swp
+*.exe

README.md

@@ -19,15 +19,22 @@ For TIOS 5.3+
  Press <kbd>Prgm</kbd> and select FSHA. you should now have the following: `PrgmFSHA` Press <kbd>Enter</kbd>
 
 ## Building From Source
+The source code for this project is available at <https://gitlab.com/stephentoth/fsh-shell>
+Download it from the link and then follow the instructions below for different operating systems.
+
 * Linux
   1. Clone, make, and install spasm-ng <https://github.com/alberthdev/spasm-ng>
   2. Run the `build` script
   ```
   ./build
   ```
+  
+* Windows
+  1. Download and build spasm-ng <https://github.com/alberthdev/spasm-ng>
+  2. Run `build.bat`
 
 ## Contributing
-Please see `CONTRIBUTING.md`
+Please see `CONTRIBUTING.md` in the repository.
 
 ## Bug Reports
 If you find an Issue or Bug, please let me know by making an Issue on Gitlab: <https://gitlab.com/stephentoth/fsh-shell>
@@ -36,4 +43,4 @@ Please include:
 2. What you were doing when the issue occurred.
 3. Possible cause/fixes? (optional)
 
-Thank you!
+Thank you!

build.bat

@@ -0,0 +1 @@
+SPASM.exe -ETA "FSHa.asm" "bin\FSHa.8xp"