Added readme

Author: runely

README.md

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+# js-utilities
+
+## Utilities
+
+### `inspect`
+
+`inspect` and **console.log** out the result. Uses the [util class](https://nodejs.org/api/util.html#utilinspectobject-showhidden-depth-colors)
+
+### `decodeBase64`
+
+Decode a **base64** string
+
+### `createObjectWithOrderedKeys`
+
+Sorts key/value pairs in a **Object** by keys
+
+### `removeKeys`
+
+Removes **keys** (***recursively***) from the given **Object**
+
+### `uniqueValues`
+
+Get only **unique** value(s) by either key or keys
+
+### `relativeDateFormat`
+
+Format a duration of **Date** into a relative format
+
+### `currencyFormat`
+
+Format a **Number** into a currency string