Fixed 2 compiler warnings of this type: String interpolation produces…#8

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neoneye wants to merge 1 commit intoPerfectExamples:masterfrom

Commits on Dec 2, 2017

Fixed 2 compiler warnings of this type: String interpolation produces a debug description for an optional value; did you mean to make this explicit? Use 'String(describing:)' to silence this warnin…
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