better readme

How to use:

======

You can set the HTML source of the image to point directly to **tinygraphs.com**

You can set the HTML source of the image to point directly to **tinygraphs.com** or you can save the image and use it directly on your site (*just remember to give us credit with a link to tinygraphs.com ;)* ).

        <img src="http://tinygraphs.com/checkerboard">

### Supported routes:

## parameters:

###size:

`tinygraphs.com/squares/hello?size=60`

![size parameter](http://tinygraphs.com/squares/hello?size=60)

###format:

default format is jpeg. You can specify the format by using the `fmt`parameter.

Supported formats are:

* JPEG

* SVG

`tinygraphs.com/squares/hello?fmt=svg`

![fmt parameter](http://tinygraphs.com/squares/hello?fmt=svg)

### background and foreground:

You can specify the color of the background or foreground by using parameters `bg` and `fg` and passing an hexadecimal value of the color:

`tinygraphs.com/squares/hello?bg=ff4008&fg=04d6f2`

![bg and fg parameters](http://tinygraphs.com/squares/hello?bg=ff4008&fg=04d6f2&size=120&fmt=svg)

## Supported routes:

`http://tinygraphs.com/checkerboard`