Update CHANGELOG; clean README

CHANGELOG

+v0.5.0-rc16
+  date: 2018-10-01
+  changes:
+    - Upgrade build scripts
+    - Dropped cleanup() calls
+    - Dropped TypeScript from sources
+    - Fixed several fixes and added new options
+    - Deprecate `jsf()` calls, use `jsf.generate()`
+    - Add support for `$id` and `const` keywords
+    - Add few common formats from draft-06
 v0.5.0-rc15
   date: 2018-04-07
   changes:

README.md

-
-
 [![JSON Schema Faker logo](logo/JSF_logo.png)](https://github.com/json-schema-faker/json-schema-faker)
 
 [![Donate](https://img.shields.io/badge/Donate-PayPal-green.svg)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=8MXLRJ7QQXGYY)
@@ -44,9 +42,8 @@ Review here: https://github.com/json-schema-faker/json-schema-faker/pull/464
 
 We have a [gitter room](https://gitter.im/json-schema-faker) for this project, if you want contribute, talk about specific issues from the library, or you need help on json-schema topics just reach us!
 
-Have some ♥ for JSON-Schema-Faker? You can support the project via:
+Please take a look at [the technical documentation page](docs/).
 
-- [Open Collective](https://opencollective.com/json-schema-faker/donate)
-- [PayPal](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=8MXLRJ7QQXGYY)
-
-Take a look at [the technical documentation page](docs/).
+> If you think `json-schema-faker` is adding value on what you're doing please consider [buying me a coffee](http://ko-fi.com/pateketrueke).
+>
+> Also, you can support the project via [Open Collective](https://opencollective.com/json-schema-faker/donate).

docs/USAGE.md

@@ -430,7 +430,7 @@ Below is the list of JSON Schema validation properties and the inferred type bas
 - **integer** — `exclusiveMaximum`, `exclusiveMinimum`, `maximum`, `minimum` and `multipleOf`
 - **number** — same as above
 - **object** — `additionalProperties`, `dependencies`, `maxProperties`, `minProperties`, `patternProperties`, `properties` and `required`
-- **string** — `maxLength`, `minLength` and `pattern`
+- **string** — `maxLength`, `minLength`, `pattern` and `format`
 
 ## Resources