docs: update readme install and usage

The original instructions touched on installation but did not touch much on
usage. In addition, the binary instructions were outdated because they expected
the program to work correctly without any flags or subcommands, which is no
longer the case.

Author: Mustafa S. Moiz

README.md

@@ -29,47 +29,43 @@ Among other things, Renom:
 - Creates backups of all affected files to prevent data loss
 - Supports consecutive renames
 
-## Usage
+## Installation
 
-You can use Renom either via the binary release or by building from source.
+You can install Renom either by downloading the binary release or by using
+the Cargo package manager.
 
 ### Binary
 
-Simply download the latest
-[release](https://github.com/UnrealisticDev/Renom/releases) and start the
-program (`.exe`).
-
-### Building from Source
-
-Renom is written in Rust. To build it from source, you will first need the [Rust
-toolchain](https://www.rust-lang.org/tools/install). Don't be scared, there is
-copious documentation every step of the way.
+Simply download the latest release
+[here](https://github.com/UnrealisticDev/Renom/releases) and put the executable
+(_.exe_) on your system PATH.
 
-Once you have Rust installed...
+### Cargo
 
-1. Clone the repo
+Renom is written in Rust, and Cargo is the package manager for Rust. Install the
+Rust toolchain, which includes Cargo, by following the instructions
+[here](https://www.rust-lang.org/tools/install). Once Cargo is installed, run
+the following command to install Renom:
 
 ```shell
-git clone https://github.com/UnrealisticDev/Renom.git
+cargo install renom
 ```
 
-2. Navigate into the repo
+This will pull and build Renom directly from
+[crates.io](https://crates.io/crates/renom). If the build is successful, you
+should be able to find the installed executable at
+_C:/Users/{User}/.cargo/bin/renom.exe_.
 
-```shell
-cd Renom
-```
+## Usage
 
-3. Build and run
+Run the following command to see available options:
 
 ```shell
-cargo run
+renom
 ```
 
-Alternatively, you can use the `install` subcommand, which will pull and build
-Renom directly from [crates.io](https://crates.io/crates/renom). If the build is
-successful, you should be able to find the installed executable at
-_C:/Users/{User}/.cargo/bin/renom.exe_.
+To start an interactive session, run the following command instead:
 
 ```shell
-cargo install renom
+renom wizard
 ```