Added: books

a_level_mathematics_guide
angularjs_learning_notes
gradle_user_guide_zh
intro_to_android
learnelasticsearch
openwrt_fanqiang
python_web_workshop
selforganising
snipe_it_manual
the_guide_to_cortex
the_swift_programming_language_zh_tw
visualops
wdi_prework
wordpress_the_right_way