Update documentation regarding minimum angular version required

Author: jtblin

examples/charts.html

@@ -111,8 +111,8 @@ <h3>Dependencies</h3>
         This repository contains a set of <strong>native AngularJS directives</strong> for Chart.js. The <strong>only required dependencies</strong> are:
       </p>
       <ul>
-        <li><a href="http://angularjs.org" target="_blank">AngularJS</a> (tested with 1.2.x, 1.3.x, 1.4.x and 1.5.x although it probably works with older versions)</li>
-        <li><a href="http://chartjs.org" target="_blank">Chart.js</a> (requires Chart.js 2.0.x).</li>
+        <li><a href="http://angularjs.org" target="_blank">AngularJS</a> (requires at least 1.4.x)</li>
+        <li><a href="http://chartjs.org" target="_blank">Chart.js</a> (requires Chart.js 2.x).</li>
       </ul>
       <h3>Files to download</h3>
       <p>

examples/charts.template.html

@@ -111,8 +111,8 @@ <h3>Dependencies</h3>
         This repository contains a set of <strong>native AngularJS directives</strong> for Chart.js. The <strong>only required dependencies</strong> are:
       </p>
       <ul>
-        <li><a href="http://angularjs.org" target="_blank">AngularJS</a> (tested with 1.2.x, 1.3.x, 1.4.x and 1.5.x although it probably works with older versions)</li>
-        <li><a href="http://chartjs.org" target="_blank">Chart.js</a> (requires Chart.js 2.0.x).</li>
+        <li><a href="http://angularjs.org" target="_blank">AngularJS</a> (requires at least 1.4.x)</li>
+        <li><a href="http://chartjs.org" target="_blank">Chart.js</a> (requires Chart.js 2.x).</li>
       </ul>
       <h3>Files to download</h3>
       <p>