Made README headers bigger

README.md

@@ -4,11 +4,11 @@ Kalker (or "kalk") is a calculator program/website that supports user-defined va
 
 [![Crates.io](https://img.shields.io/crates/v/kalker)](https://crates.io/crates/kalker) ![npm](https://img.shields.io/npm/v/@paddim8/kalk) [![GitHub](https://img.shields.io/github/license/PaddiM8/kalk)](https://github.com/PaddiM8/kalker/blob/master/LICENSE) [![Docs.rs](https://docs.rs/kalk/badge.svg)](https://docs.rs/kalk/latest/kalk/) ![Build status](https://img.shields.io/github/workflow/status/PaddiM8/kalker/Rust?event=push&label=build%20%26%20test)
 
-[Kanban](https://kolan.strct.net/Board/4RAdMjLDz) | [Website - Try it out here!](https://kalker.strct.net)
+[Kanban](https://kolan.strct.net/Board/4RAdMjLDz) | [Website - Try it out here!](https://kalker.strct.net) | [Donate](#ditsonation)
 
 ![](preview.png)
 
-## Features
+# Features
 
 * Operators: `+`, `-`, `*`, `/`, `!`
 * Groups: `()`, `⌈ceil⌉`, `⌊floor⌋`, `[iverson]`
@@ -24,39 +24,43 @@ Kalker (or "kalk") is a calculator program/website that supports user-defined va
 * Load a file including predefined functions and constants. For example, if you're going to use kalker for physics, you load up your file with physics functions/constants when starting kalker. `-i file`
 * Misc: separate expressions by a semicolon to write them on the same line, use the `ans` variable to get the value of the previously calculated expression.
 
-## Installation
+# Installation
 
-### Package managers
+## Package managers
 
-#### macOS
+### macOS
 `brew install kalker`
 
-#### Arch Linux
+### Arch Linux
 `kalker` in the AUR, eg. `yay -S kalker`
 
-#### Nix/NixOS
+### Nix/NixOS
 Kalker is available through [`nixpkgs`](https://search.nixos.org/packages?channel=unstable&show=kalker&from=0&size=50&sort=relevance&type=packages&query=kalker).
 The most up to date version is also available as a [`flake`](https://search.nixos.org/flakes?channel=unstable&show=kalker&from=0&size=50&sort=relevance&type=packages&query=kalker).
 
-### Binaries
+## Binaries
 
 Pre-compiled binaries for Linux, Windows, and macOS (64-bit) are available in the [releases page](https://github.com/PaddiM8/kalker/releases).
 
-### Compiling
+## Compiling
 
 **Minimum rust version: v1.36.0**. Make sure you have `diffutils` `gcc` `make` and `m4` installed. **If you use windows:** [follow the instructions here](https://docs.rs/gmp-mpfr-sys/1.2.3/gmp_mpfr_sys/index.html#building-on-windows) (don't forget to install `mingw-w64-x86_64-rust` in MSYS2).
 
-#### Cargo
+### Cargo
 
 Run `cargo install kalker`
 
-#### Manually
+### Manually
 
 1. Go into the `cli` directory.
 2. Run `cargo build --release`
 3. Grab the binary from `targets/release`
 
-## Libraries
+# Donation
+
+Kalker is completely free and open source. If you wish to support further development of Kalker, you can do so here: [PayPal](https://paypal.me/oliverwaldemar)
+
+# Libraries
 
 There are currently three different libraries related to kalker.
 
@@ -64,11 +68,11 @@ There are currently three different libraries related to kalker.
 * [@paddim8/kalk](https://www.npmjs.com/package/@paddim8/kalk): JavaScript bindings for `kalk`. This lets you use it in the browser thanks to WebAssembly.
 * [@paddim8/kalk-component](https://www.npmjs.com/package/@paddim8/kalk-component): A web component that runs `@paddim8/kalk`, which let's you use kalk in the browser with a command line-like interface.
 
-## Syntax
+# Syntax
 
 A more complete reference can be found on [the website](https://kalker.strct.net)
 
-### Functions
+## Functions
 
 **Defining:** name(parameter1, parameter2, ...) = expression\
 **Example:** `f(x) = 2x+3`
@@ -76,7 +80,7 @@ A more complete reference can be found on [the website](https://kalker.strct.net
 **Using:** name(argument1, argument2)\
 **Example:** `f(2)`
 
-### Variables
+## Variables
 
 **Defining:** name = expression\
 **Example:** `x = 3`
@@ -84,7 +88,7 @@ A more complete reference can be found on [the website](https://kalker.strct.net
 **Using:** name\
 **Example:** `x`
 
-## Contributing
+# Contributing
 
 ## kalk and cli (Rust)