move changelog to

Author: Branko Wilhelm

CHANGELOG.md

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+# Changelog
+
+- 2014-12-29 
+  - new: system plugin instead of content plugin
+  - new: only joomla 3.x support
+  - new: ajax interface usage for location caching
+- 2014-08-19 
+  - new: JomSocial support
+- 2014-07-16 
+  - fixed: "fitBounds" endless while in javascript
+- 2014-05-04 
+  - new: legend
+

README.md

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+# Member Map Extension for Joomla
+
+![](https://img.shields.io/static/v1?label=Joomla&message=3.X&style=flat&logo=joomla&logoColor=orange&color=blue)
+![](https://img.shields.io/github/release/z-index-net/joomla-plugin-system-member-map.svg)
+![](https://img.shields.io/github/downloads/z-index-net/joomla-plugin-system-member-map/total.svg)
+![](https://img.shields.io/badge/Maintained%3F-no-red.svg)
+![](https://img.shields.io/github/license/z-index-net/joomla-plugin-system-member-map.svg)
+
+currently supported sources:
+
+- Kunena (Locations field)
+- JomSocial (City and Country Field, based on JomSocial integration configuration)
+
+### Notes
+based on google maps v3
+
+### Preview
+
+![Screenshot](./screenshots/plg_system_membermap.0.png?raw=true)
+
+![Screenshot](./screenshots/plg_system_membermap.1.png?raw=true)
+