change React.PropTypes to prop-types

[danielduan]

Issue:
#1673 React.PropTypes is deprecated and removed completely in React@16-beta

What I did

ran jscodeshift and changed them

How to test

run the example app with react-native@16

[codecov]

Codecov Report

Merging #1674 into master will decrease coverage by 0.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #1674      +/-   ##
==========================================
- Coverage   20.57%   20.56%   -0.02%     
==========================================
  Files         247      247              
  Lines        5554     5557       +3     
  Branches      664      664              
==========================================
  Hits         1143     1143              
- Misses       3898     3901       +3     
  Partials      513      513

Impacted Files	Coverage Δ
...-native/src/preview/components/OnDeviceUI/index.js	0% <0%> (ø)	⬆️
...tive/src/preview/components/StoryListView/index.js	0% <0%> (ø)	⬆️
...t-native/src/preview/components/StoryView/index.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/shortcuts/actions/shortcuts.js	6.25% <0%> (ø)	⬆️
...ponents/left_panel/stories_tree/tree_decorators.js	32% <0%> (ø)	⬆️
lib/ui/src/libs/key_events.js	23.25% <0%> (ø)	⬆️
addons/info/src/components/markdown/htags.js	30% <0%> (ø)	⬆️
addons/info/src/components/Props.js	37.2% <0%> (ø)	⬆️
addons/info/src/components/PropTable.js	22.36% <0%> (ø)	⬆️
addons/knobs/src/components/types/Color.js	8% <0%> (ø)	⬆️
... and 16 more

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