Bump json from 20160810 to 20180813 in /examples

[dependabot-preview]

Bumps json from 20160810 to 20180813.

Release notes

Sourced from json's releases.

20180813

Pull Request	Description
#405	Update javadoc to match actual exceptions thrown.
#403	Ignore Intellij Idea project files
#400	XML toJSONObject(Reader reader)

20180130

Pull Request	Description
#392	Remove wrong apostrophe
#381	Adding maven badge to readme
#380	Fix for false positives in similar functions
#375	fixes wrapped exceptions
#373	Fixes Unclosed json array stack overflow

20171018

Pull Request	Description
#362	Fixes XML Unescaping
#360	Creating a JSONObject from a string that contains a duplicate key (any level) throws a JSONException that includes location
#357	Update javadoc according to issue #356
#354	Updates for populateMap based on discussion in #279 and #264
#352	Error message position fixes
#348	Capacity improvements for internal structures
#347	A comment added to explain the use of HashMap
#345	Adds JSONException for write value errors
#341	Optimize loops
#337	Optimizes opt* functions
#336	Numeric enhancements, Refactoring, Fix spelling

20170516

Pull Request	Description
#324	Allow user to invoke query and optQuery ,with a JSONPointer
#317	make sure locale independent data is not upper/lowercased incorrectly
#304	Update README
#292	Provides "#" string evaluation support for JSON Pointer
#288	Bug fixes for XML Encoding and Decoding
#274	Fix for number output bug.
#271	Update enum support to be more fully featured.

Commits

• 37f5bf2 Update README.md
• 7a17ae0 Merge pull request #421 from strkkk/add-emptiness-methods
• 7cad4c3 partially revert changes
• 0507438 change length comparison to isEmpty method
• a490ebd add isEmpty and isNotEmpty methods
• 3c1535d Merge pull request #417 from stleary/fix-double-ctor
• a6284df initial commit
• bfb3008 Merge pull request #411 from johnjaylward/JSONPointerTrailingSlash
• 06e9ad2 Merge pull request #403 from paulpolushkin/idea-fix
• 2362c93 Fixes #410. Invalid processing of trailing / for JSON Pointer
• Additional commits viewable in compare view

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