Adds Playground header

[dzenbot]

Creates the repo's header programmatically, as an Iconic exercise and extended example all done in Playground.

[robotelio]

SwiftLint found issues

Errors

File	Line	Reason
IconicHeaderView.swift	126	Force casts should be avoided.
IconicHeaderView.swift	127	Force casts should be avoided.
IconicHeaderView.swift	21	Function should have 5 parameters or less: it currently has 10

Generated by :no_entry_sign: danger

[codecov-io]

Current coverage is 91.18% (diff: 100%)

Merging #63 into swift-3-support will not change coverage

@@           swift-3-support        #63   diff @@
=================================================
  Files                    1          1          
  Lines                  102        102          
  Methods                  0          0          
  Messages                 0          0          
  Branches                 0          0          
=================================================
  Hits                    93         93          
  Misses                   9          9          
  Partials                 0          0          

Diff Coverage	File Path
•••••••••• 100%	Source/IconDrawable.swift

Powered by Codecov. Last update d802c43...36fcebd