Extending Example App

[Blackjacx]

This PR extends the example app by:

• showing a searchbar in the navigation bar (f233086)
• showing how to resize the navbar up to a maximum of 44 pt (5d2651f)
• showing how to remove the shadow image from the navigation bar (670c4eb)

Resolves

• Resolves Search Bar height & remove separator #45 - Search Bar height & remove separator

[codecov-io]

Codecov Report

Merging #46 into develop will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #46   +/-   ##
========================================
  Coverage    89.62%   89.62%           
========================================
  Files            6        6           
  Lines          270      270           
========================================
  Hits           242      242           
  Misses          28       28

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