docs: Update Readme

Updated Readme code sample to reflect current API

Add instructions for building on Mac OS

Remove requirement of nightly Rust compiler, as it is no more needed

README.md

@@ -12,53 +12,35 @@ You will need Python 3.7 or newer.
 
 #### Rust
 
-You will need the nightly build of Rust:
+You will need to install the latest Rust:
 
-https://www.rust-lang.org/tools/install
-
-
-`rustup toolchain install
-nightly`
-
-Now Rust Nightly is installed but not activated.
-
-To switch to nightly
-globally, change the default with `rustup default nightly`:
-
-```console
-$ rustup default nightly
-info: using existing install for 'nightly'
-info: default toolchain set to 'nightly'
-
-  nightly unchanged: rustc 1.9.0-nightly (02310fd31 2016-03-19)
-
-```
-
-Now any time you run `cargo` or `rustc` you will be running the
-nightly compiler.
+https://rustup.rs/
 
 ### Installing
 
+Clone the sc2-pathlib repository and run `cargo build --release` in the sc2-pathlib directory. This should create a `libsc2pathlib.so`(Linux), a `sc2pathlib.dll`(Windows), or a `libsc2pathlib.dylib` file in `sc2-pathlib\target\release`. If on Windows, you need to rename the `sc2pathlib.dll` file to `sc2pathlib.pyd`.
+On Linux or Mac OS, rename it to `sc2pathlib.so`.
 
-Clone the sc2-pathlib repository and run `cargo build --release` in the sc2-pathlib directory. This should create a `sc2pathlib.so`(Linux) or a `sc2pathlib.dll`(Windows) file in `sc2-pathlib\target\release`. If on Windows, you need to rename the `sc2pathlib.dll` file to `sc2pathlib.pyd`. 
-
-Alternatively, you can run `build.bat` which automates the process above for Windows or `linux_build.sh` to automate on Linux.
+Alternatively, you can run helper scripts:
+ - `build.bat` on Windows
+ - `linux_build.sh` on Linux
+ - `mac_build.sh` on Mac OS
 
 Copy `sc2pathlib.so`/`sc2pathlib.pyd` to the directory where your Python program resides to be able to import it as a Python library.
 
 #### Example
 ```
 >>> import sc2pathlib
->>> pf = sc2pathlib.PathFind([[1,1,1,1],[0,0,0,1],[1,1,0,1],[1,1,1,1]], (0, 0), (2, 0))
->>> pf.find_path([[1,1,1,1],[0,0,0,1],[1,1,0,1],[1,1,1,1]], (0, 0), (2, 0))
+>>> pf = sc2pathlib.PathFind([[1,1,1,1],[0,0,0,1],[1,1,0,1],[1,1,1,1]])
+>>> pf.find_path((0, 0), (2, 0))
 
-([(0, 0), (0, 1), (0, 2), (0, 3), (1, 3), (2, 3), (3, 3), (3, 2), (3, 1), (2, 0)], 94142)
+([(0, 0), (0, 1), (0, 2), (0, 3), (1, 3), (2, 3), (3, 3), (3, 2), (3, 1), (2, 0)], 9.414199829101562)
 >>>
 ```
 
 ## PathFind
 #### Parameters
-`grid`: A two-dimensional array using 1 for pathable and 0 for obstacles. 
+`grid`: A two-dimensional array using 1 for pathable and 0 for obstacles.
 Example:
 `[[1,1,1,1],[0,0,0,1],[1,1,0,1],[1,1,1,1]]`