Prevents publishing examples to npm (#149)

* fix: prevents /examples, .mocharc, CHANGELOG.md, and README.md from being published to npm to save some bytes

* fix: removes CHANGELOG.md and README.md from npmignore since npm will always add them

Author: tharnach

.npmignore

@@ -1,4 +1,6 @@
 /src*
 /websocket_example*
 /.circleci*
-tsconfig.json
+tsconfig.json
+/examples
+.mocharc.json