added changelog in file structure

Author: chelarucip

README.md

@@ -47,6 +47,7 @@ Within the download you'll find the following directories and files:
 ```
 material-dashboard-angular
 ├── README.md
+├── LICENSE.md
 ├── app
 │   ├── app.component.html
 │   ├── app.component.js
@@ -135,12 +136,21 @@ material-dashboard-angular
 ├── documentation
 │   ├── css
 │   └── tutorial-components.html
+├── changelog.txt
 ├── index.html
 ├── package.json
 ├── systemjs.config.js
 └── tsconfig.json
 
 ```
+### Version logs
+
+V1.0.0 - 30 Jan 2017 [initial Release]
+V1.1.0 - small fixed
+V1.1.1 - 20 March (V1.1.0 from Material Dashboard HTML)
+- added "@types/core-js": "0.9.35" in package
+- added "upgrade to pro" page
+
 
 ## Useful Links
 

changelog.txt

@@ -2,3 +2,4 @@ V1.0.0 - 30 Jan 2017 [initial Release]
 V1.1.0 - small fixed
 V1.1.1 - 20 March (V1.1.0 from Material Dashboard HTML)
 - added "@types/core-js": "0.9.35" in package
+- added "upgrade to pro" page

documentation/tutorial-components.html

@@ -319,6 +319,7 @@ <h2 class="text-left">File Structure</h2>
 	├── documentation
 	│   ├── css
 	│   └── tutorial-components.html
+	├── changelog.txt
 	├── index.html
 	├── package.json
 	├── systemjs.config.js