Optimise images (520 KB reduction)

Hi, angular.

I've taken the liberty of putting angular.js's image assets though a range of optimisation tools. Image optimisation allows us to reduce the footprint of images - meaning faster load times at no cost to image quality. It does this by finding the best (lossless) compression parameters, stripping embedded comments, and removing unnecessary colour profiles. [See more](http://port3000.co.uk/imageoptimiser-a-github-bot-to-proactively-op).

I found 64 optimisable images, making a 520 KB reduction in size. That's about 15.33% of your total image assets.

Merry Christmas.

<table><tr><th>Name</th><th>Reduction</th></tr><tr><td>AngularJS-small.png</td><td>16.60%</td></tr><tr><td>One_Way_Data_Binding.png</td><td>28.42%</td></tr><tr><td>Two_Way_Data_Binding.png</td><td>32.01%</td></tr><tr><td>angular_parts.png</td><td>42.88%</td></tr><tr><td>bullet.png</td><td>32.08%</td></tr><tr><td>form_data_flow.png</td><td>30.54%</td></tr><tr><td>about_model_final.png</td><td>3.87%</td></tr><tr><td>about_view_final.png</td><td>4.83%</td></tr><tr><td>concepts-controller.png</td><td>31.31%</td></tr><tr><td>concepts-directive.png</td><td>14.69%</td></tr><tr><td>concepts-model.png</td><td>26.94%</td></tr><tr><td>concepts-module-injector.png</td><td>30.04%</td></tr><tr><td>concepts-runtime.png</td><td>30.22%</td></tr><tr><td>concepts-scope.png</td><td>21.05%</td></tr><tr><td>concepts-startup.png</td><td>31.34%</td></tr><tr><td>concepts-view.png</td><td>27.27%</td></tr><tr><td>di_sequence_final.png</td><td>25.86%</td></tr><tr><td>dom_scope_final.png</td><td>5.54%</td></tr><tr><td>hashbang_vs_regular_url.jpg</td><td>35.58%</td></tr><tr><td>scenario_runner.png</td><td>51.05%</td></tr><tr><td>simple_scope_final.png</td><td>5.60%</td></tr><tr><td>helloworld.png</td><td>17.83%</td></tr><tr><td>helloworld_2way.png</td><td>16.22%</td></tr><tr><td>catalog_screen.png</td><td>5.24%</td></tr><tr><td>tutorial_00.png</td><td>23.20%</td></tr><tr><td>tutorial_00_final.png</td><td>5.48%</td></tr><tr><td>tutorial_02.png</td><td>18.39%</td></tr><tr><td>tutorial_03.png</td><td>19.52%</td></tr><tr><td>tutorial_04.png</td><td>20.62%</td></tr><tr><td>tutorial_07_final.png</td><td>5.29%</td></tr><tr><td>tutorial_08-09_final.png</td><td>5.28%</td></tr><tr><td>tutorial_10-11_final.png</td><td>5.17%</td></tr><tr><td>xhr_service_final.png</td><td>5.00%</td></tr><tr><td>arrow_left.gif</td><td>13.73%</td></tr><tr><td>arrow_right.gif</td><td>13.73%</td></tr><tr><td>indicator-wait.png</td><td>22.39%</td></tr><tr><td>image1.png</td><td>5.35%</td></tr><tr><td>image2.png</td><td>11.37%</td></tr><tr><td>image4.png</td><td>4.64%</td></tr><tr><td>image8.png</td><td>4.65%</td></tr><tr><td>image9.png</td><td>3.01%</td></tr><tr><td>image3.png</td><td>21.93%</td></tr><tr><td>image1.png</td><td>25.81%</td></tr><tr><td>image4.png</td><td>31.93%</td></tr><tr><td>image5.png</td><td>29.79%</td></tr><tr><td>image7.png</td><td>58.87%</td></tr><tr><td>image7.png</td><td>58.87%</td></tr><tr><td>image11.png</td><td>6.24%</td></tr><tr><td>image13.png</td><td>16.22%</td></tr><tr><td>image15.png</td><td>23.75%</td></tr><tr><td>image9.png</td><td>10.54%</td></tr><tr><td>image10.png</td><td>10.07%</td></tr><tr><td>image10.png</td><td>10.07%</td></tr><tr><td>image7.png</td><td>58.87%</td></tr><tr><td>AngularJS-Shield-huge.png</td><td>17.07%</td></tr><tr><td>AngularJS-Shield-large.png</td><td>16.72%</td></tr><tr><td>AngularJS-Shield-medium.png</td><td>17.35%</td></tr><tr><td>AngularJS-Shield-small.png</td><td>20.44%</td></tr><tr><td>AngularJS-huge.png</td><td>16.95%</td></tr><tr><td>AngularJS-large.png</td><td>21.92%</td></tr><tr><td>AngularJS-medium.png</td><td>25.15%</td></tr><tr><td>AngularJS-small.png</td><td>26.46%</td></tr><tr><td>image1.png</td><td>4.04%</td></tr><tr><td>image2.png</td><td>18.57%</td></tr></tr></table>

Tools used: advpng, gifsicle, jpegoptim, jpegrescan, jpegtran, optipng, pngcrush, pngout. This is an automated bot maintained by [@skattyadz](https://twitter.com/skattyadz)