vhf/free-programming-books — pull request #305 by sillero (2013-10-30 17:41:24+00:00)
Title: Creating AngularJS sub-section

Moved "AngularJS in 60 Minutes" to new sub-section Angular.js

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I guess the "whole document change" was because github's in-browser editor.
I forked the project and edited locally. Sorry for the trouble.