Docs: Fix GitHub links; add usage.md

src/docs/index.md

@@ -14,6 +14,10 @@
 * [Usage](usage.md)
 * [Data Format](format.md)
 
+### Source code
+
+* [https://github.com/ANL-CEEESA/unitcommitment.jl](https://github.com/ANL-CEEESA/unitcommitment.jl)
+
 ### Authors
 * **Alinson Santos Xavier** (Argonne National Laboratory)
 * **Feng Qiu** (Argonne National Laboratory)

src/docs/usage.md

@@ -0,0 +1,18 @@
+# Installation Guide
+
+This package was tested and developed with [Julia 1.5](https://julialang.org/). To install Julia, please follow the [installation guide on their website](https://julialang.org/downloads/platform.html). To install `UnitCommitment.jl`, run the Julia interpreter, type `]` to open the package manager, then type:
+
+```text
+pkg> add https://github.com/ANL-CEEESA/UnitCommitment.jl.git
+```
+
+To test that the package has been correctly installed, run:
+
+```text
+pkg> test UnitCommitment
+```
+
+If all tests pass, the package should now be ready to be used by any Julia script on the machine. To try it out in the julia interpreter hit `backspace` to return to the regular interpreter, and type the following command:
+```julia
+using UnitCommitment
+```