update readme

Author: wulfmann

README.md

@@ -37,10 +37,65 @@ $ pip install aws_coco
 
 ## Usage
 
+This section explains how to use `coco` and covers some of the options available to you.
+
+### Basic Usage
+
 ```bash
-$ coco 
+$ coco --color green --icon fingerprint --name test
 ```
 
+This will open the url in a `green` firefox container tab named `test` with a `fingerprint` icon.
+
+### Credential Resolution
+
+This project uses [boto3](https://github.com/boto/boto3). You can learn more about how `boto3` resolves credentials [here](https://boto3.amazonaws.com/v1/documentation/api/1.9.42/guide/configuration.html#configuring-credentials).
+
+If you specify the `--profile` flag, `coco` will pass that value into the `boto3` session and it will attempt to use the corresponding section in the `~/.aws/credentials` file for the session.
+
+### Options
+
+This section contains a description of the various options available to you. You can also pass the `-h` flag to print the help.
+
+|Flag|Description|Default|Required|
+|----|-----------|-------|--------|
+|`--color`, `-c`|The container tab's color||false|
+|`--container`, `--no-container`|Determines if the url should be opened in a firefox container||true|
+|`--destination`, `-d`|The destination URL to open in the AWS console||false|
+|`--icon`, `-i`|The container tab's icon||false|
+|`--name`, `-n`|The container tab's name|The profile name if passed|false|
+|`--open`, `--no-open`|Determines if the url should be automatically opened in the browser||true|
+|`--profile`, `-p`|The AWS profile to use||false|
+
+### Available Colors
+|value|
+|-----|
+|blue|
+|turquoise|
+|green|
+|yellow|
+|orange|
+|red|
+|pink|
+|purple|
+
+### Available Icons
+|value|
+|-----|
+|fingerprint|
+|briefcase|
+|dollar|
+|cart|
+|vacation|
+|gift|
+|food|
+|fruit|
+|pet|
+|tree|
+|chill|
+|circle|
+|fence|
+
 ## Development
 
 ```bash