Cleanup the project

* Add .cache to gitignore (for the nlohmann::json library)
* Fix the project name
* Update the readme

README.md

@@ -1,6 +1,6 @@
 # hack-assembler
 
-An implementation of a hack assembler in C++.
+An implementation of a hack assembler in C++, based on the project 6 of the [nand2tetris course](https://www.nand2tetris.org/https://b1391bd6-da3d-477d-8c01-38cdf774495a.filesusr.com/ugd/44046b_89a8e226476741a3b7c5204575b8a0b2.pdf).
 
 ## Compilation
 
@@ -12,9 +12,15 @@ cmake --build build
 ## Usage
 
 ```bash
-g++ -o hack-assembler main.cpp
 cat <input_file.asm> | ./hack-assembler > ./out/<output_file.hack>
 ```
 
+## Testing
+
+In order to check the assembler, you can generate the .hack files from the asm-samples directory. And test those within [nand2tetris CPU emulator](https://nand2tetris.github.io/web-ide/cpu/).
+
+## References
+- [nand2tetris course](https://www.nand2tetris.org/)
+
 ## License
 This project is under the WTFPL License. See [LICENSE](LICENSE) for details.