Zig implementation (#142)

* [Zig] Added pure Zig implementation

* [Zig] Added README.md

* Updated README.md

Added Zig entry and updated contributor's section

README.md

@@ -38,6 +38,7 @@ If you are looking for a more extensive noise generation library consider using
 - [Rust](/Rust/)  
   [![crates.io](https://img.shields.io/crates/v/fastnoise-lite?logo=rust "crates.io")](https://crates.io/crates/fastnoise-lite)
 - [Fortran](/Fortran/)
+- [Zig](/Zig/)
 
 If you want to port FastNoise Lite to a new language create a pull request or discuss it on the discord linked above
 
@@ -86,7 +87,7 @@ Million points of noise generated per second (higher = better)
 - [@Rover656](https://github.com/Rover656) for creating the preview GUI and porting FastNoise Lite to C and HLSL.
 - [@snowfoxsh](https://github.com/snowfoxsh) for creating the JavaScript port.
 - [@dotlogix](https://github.com/dotlogix) for creating the GLSL port.
-- [@ForeverZer0](https://github.com/ForeverZer0) for creating the Go port.
+- [@ForeverZer0](https://github.com/ForeverZer0) for creating the Zig and Go ports.
 - [@Keavon](https://github.com/Keavon) for creating the Rust port.
 - [@jordan4ibanez](https://github.com/jordan4ibanez) for creating the Fortran port.
 

Zig/README.md

@@ -0,0 +1,33 @@
+# Install
+
+Simply copy the `fastnoise.zig` file directly into your project.
+
+# Getting Started
+
+The noise generator is implemented as a `comptime` function which returns a type, supporting both 32/64-bit floating-point types.
+The generator does no allocations, nor is allocation required for initialization. 
+
+While the initial state of the generator is valid, you will likely want to pass in some configuration...
+```zig
+const fastnoise = @import("fastnoise.zig");
+
+const noise = fastnoise.Noise(f32) {
+  .seed = 1337,
+  .noise_type = .cellular,
+  .frequency = 0.025,
+  .gain = 0.40,
+  .fractal_type = .fbm,
+  .lucunarity = 0.40,
+  .cellular_distance = .euclidian,
+  .cellular_return = .distance2,
+  .cellular_jitter_mod = 0.88,
+};
+
+const size = 128;
+var values: [size * size]f32 = undefined;
+for (0..values.len) |i| values[i] = noise.genNoise2D(@floatFromInt(i % size), @floatFromInt(i / size));
+
+// Use noise values for whatever you please.
+```
+
+All functions of the generator are "pure" in that they do not alter its internal state, so you are free to initialize it as `const` if you will not be changing any of its fields afterwards.