Added example images and screenshots to README.

Author: qw3rtman

README.md

@@ -1,27 +1,87 @@
-`gg`
+gg
 ==
 
 the cookbook of git goodies
 
 ![status](screenshots/status.png)
+![log](screenshots/log.png)
+
 
 `gg` helps you *work with `git` more efficiently*, saving you keystrokes for your most prized projects.
 
 Think of `gg` as a wrapper for the `git` commands that you run all the time.
 
 ## Getting Started
-Suppose we want to clone the [awesome spark shell script (created by Zach Holman)](https://github.com/holman/spark).
+After the [super painless installation](#installation), suppose we want to clone the [awesome spark shell script (created by Zach Holman)](https://github.com/holman/spark).
 ![status](screenshots/clone.png)
 Alright, let's switch into that directory.
-![status](screenshots/gettingstarted2.png)
+![gettingstarted2](screenshots/gettingstarted2.png)
 After making a quick change, let's check the status of our clone.
-![status](screenshots/gettingstarted3.png)
+![gettingstarted3](screenshots/gettingstarted3.png)
 Looks like we haven't staged our changes.
 
 In the standard git workflow, we would have to `git add -A` and then `git commit -m "Updated example in README."`.
 
 With `gg`, we can simply `gg c Updated example in README.` and we're good to go.
-![status](screenshots/gettingstarted4.png)
+![gettingstarted4](screenshots/gettingstarted4.png)
 Let's check our clone's status again.
-![status](screenshots/gettingstarted5.png)
+![gettingstarted5](screenshots/gettingstarted5.png)
 Looking good!
+
+## Installation
+`gg` can be installed via the Node Package Manager (`npm`).
+
+```sh
+	$ npm install -g gg
+```
+You can also get up and running without npm, but it is not recommended to do so.
+
+`gg` relies on Node.js and `git`.
+
+## Usage
+### Initializing repositories
+![initialize](screenshots/initialize.png)
+* `$ gg i`
+* `$ gg init`
+* `$ gg initialize`
+
+### Cloning repositories
+![clone](screenshots/clone.png)
+* `$ gg cl`
+* `$ gg clone`
+
+### Adding changes
+![add](screenshots/add.png)
+* `$ gg a`
+* `$ gg aa # add all`
+* `$ gg add`
+
+### Committing changes
+![commit](screenshots/commit.png)
+* `$ gg c`
+* `$ gg commit`
+
+### Pushing commits
+![push](screenshots/push.png)
+* `$ gg p`
+* `$ gg push`
+
+### Pulling commits
+![pull](screenshots/pull.png)
+* `$ gg pl`
+* `$ gg pull`
+
+### Fetching commits
+![fetch](screenshots/fetch.png)
+* `$ gg f`
+* `$ gg fetch`
+
+### Viewing status
+![status](screenshots/status.png)
+* `$ gg s`
+* `$ gg status`
+
+### Viewing log
+![log](screenshots/log.png)
+* `$ gg l`
+* `$ gg log`