some nodejs and angular tutorials
Merge branch 'master' of https://github.com/GalCohen/GetStartedSnippets

* 'master' of https://github.com/GalCohen/GetStartedSnippets: (92 commits)
  customizing user interface
  subclassing UIcontrol to create a custom ui with uikit and coregraphics
  coreMotion, spritekit, audio, sprite atlases
  Spritekite, acceleratometer using CoreMotion
  drag n drop in spritekit
  spritekit - wokring with sprites and image atlases
  simple spritekit tutorial
  NSURLSession, ProgressView, TableViews, background downloads
  nsurlsession
  NSURLSession
  uikit particle systems
  rendering PDF files
  drawing and generating pdf
  live video blurring
  gpuimage static blur example
  custom animations tutorial
  mapkit tutorial
  uiview animations
  custom controls w/ CoreAnimation, CoreGraphics and Custom Gesture
  readme typo
  ...