feat: added info about adding to path in introduction

docs/src/introduction.md

@@ -1,3 +1,51 @@
 # Introduction
 
 Eiipm is a fast and eligant package manager made in rust for [Ewwii](https://github.com/Ewwii-sh/ewwii). Eiipm uses the package metadata from the [Ewwii-sh/eii-manifests](https://github.com/Ewwii-sh/eii-manifests) repository where the manifests of packages are stored.
+
+## Installation
+
+You can install **eiipm** using the same [methods we discussed](https://ewwii-sh.github.io/ewwii/installation.html) of in Ewwii:
+
+#### 1. From source
+
+```bash
+git clone https://github.com/Ewwii-sh/eiipm
+cd eiipm
+cargo build --release
+```
+
+This will generate the `eiipm` binary in `target/release`.
+
+#### 2. Using Cargo
+
+```bash
+cargo install --git https://github.com/Ewwii-sh/eiipm
+```
+
+After installation, verify it works:
+
+```bash
+eiipm --version
+```
+
+## Adding eiipm to path
+
+**This is a very important step** which people are likely to miss. By default, eiipm installs binaries to `~/.eiipm/bin` directory. But your shell doesn't know about it yet.
+
+So, when you run something like `bin-you-installed` after installing a binary from eiipm, your shell will go like "Oh, let me check in all the known areas. Nope, `bin-you-installed` is not installed..."
+
+So, you should add `export PATH="$HOME/.eiipm/bin:$PATH"` to your shell's configuration file.
+
+**Here is an example on how to do it:**
+
+```bash
+# Replace ~/.zshrc with your shell's configuration file.
+# For example, if you use bash, then it would be ~/.bashrc
+echo 'export PATH="$HOME/.eiipm/bin:$PATH"' >> ~/.zshrc
+```
+
+I use zsh, so I added the line `export PATH="$HOME/.eiipm/bin:$PATH"` in `~/.zshrc` but if you use something else, you should replace the `~/.zshrc` with your own shell's confiuration file.
+
+For example, if you use bash, add that line in `~/.bashrc`.
+
+> **NOTE:** If you dont want to use echo to add it, then you can manually edit your configuration file and add the line `export PATH="$HOME/.eiipm/bin:$PATH"` in there.