* fix broken urls
* trigger on pull request creation too
* allow certificate verify failed
some sites have misconfigured/expired certs
* adding back two links that were manually verified good
* [A Complete guide for learning Backbone.js](http://codebeerstartups.com/2012/12/a-complete-guide-for-learning-backbone-js/)
* [A pragmatic guide to Backbone.js apps](http://pragmatic-backbone.com)
* [Backbone Tutorials: Beginner, Intermediate and Advanced](https://leanpub.com/backbonetutorials) - Thomas Davis *(Leanpub account or valid email requested)*
* [On Lisp](http://www.paulgraham.com/onlisp.html) - P. Graham
* [Paradigms of Artificial Intelligence Programming: Case Studies in Common Lisp](https://github.com/norvig/paip-lisp) - Peter Norvig (PDF, epub, markdown)
* [Practical Common Lisp](http://www.gigamonkeys.com/book/) - P. Seibel
* [SOLID Design Principles in Common Lisp](https://common-lisp-reserve.github.io/solid-design-principles-in-common-lisp/solid-design-principles-in-common-lisp.pdf) - Momozor (PDF)
* [Successful Lisp: How to Understand and Use Common Lisp](https://github.com/clojurians-org/lisp-ebook/blob/master/Successful%20Lisp%20How%20to%20Understand%20and%20Use%20Common%20Lisp%20-%20David%20B.%20Lamkins.pdf) - David Lamkins (PDF)
* [The Common Lisp Cookbook](https://lispcookbook.github.io/cl-cookbook/)
* [The Evolution of Lisp](http://www.dreamsongs.com/Files/HOPL2-Uncut.pdf) - Guy L. Steele Jr., Richard P. Gabriel (PDF)
* [Secrets of PowerShell Remoting](https://www.gitbook.com/book/devopscollective/secrets-of-powershell-remoting/details) (PDF, ePub, MOBI)
* [The Big Book of PowerShell Error Handling](https://www.gitbook.com/book/devopscollective/the-big-book-of-powershell-error-handling/details) (PDF, ePub, MOBI)
* [The Big Book of PowerShell Gotchas](https://www.gitbook.com/book/devopscollective/the-big-book-of-powershell-gotchas/details) (PDF, ePub, MOBI)
* [The Swift Programming Language](https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/index.html) (HTML) [(iBook)](https://itunes.apple.com/us/book/swift-programming-language/id881256329?mt=11)
* [Using Swift with Cocoa and Objective-C](https://developer.apple.com/library/content//documentation/Swift/Conceptual/BuildingCocoaApps/index.html) (HTML) [(iBook)](https://itunes.apple.com/us/book/using-swift-cocoa-objective/id888894773?mt=11)