Add changelog

CHANGELOG.md

@@ -0,0 +1,7 @@
+## 18/11/28
+
+- Migrated from Dep to vgo
+- Overhauled the event system
+  - check the wiki/readme/examples for details
+- Renamed Par to Paragraph
+- Renamed MBarChart to StackedBarChart

README.md

@@ -6,6 +6,8 @@
 
 `termui` is a cross-platform, easy-to-compile, and fully-customizable terminal dashboard built on top of [termbox-go](https://github.com/nsf/termbox-go). It is inspired by [blessed-contrib](https://github.com/yaronn/blessed-contrib) and written purely in Go.
 
+**termui is currently undergoing some API changes so make sure to check the changelog when upgrading**
+
 ## Installation
 
 It's recommended to install from the master branch:
@@ -14,8 +16,6 @@ It's recommended to install from the master branch:
 go get -u github.com/gizak/termui@master
 ```
 
-Note that termui is currently undergoing some API changes so be prepared for things to break if you upgrade.
-
 ## Usage
 
 ### Hello World