Update README.md

README.md

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-# QT-collapsable-section
+# QT: Collapsible Section
 
 This is a simple collapsable section for QT. It has been tested with QT5.6.
 
 Special thanks to "x squared" who has posted the original code for this idea at StackOverflow: http://stackoverflow.com/a/37119983/2573127
+
+## Sample Code
+
+    Section* section = new Section("Section title", 300, parentWidget);
+    auto* anyLayout = new QVBoxLayout();
+    anyLayout->addWidget(new QLabel("Some Text in Section", section));
+    anyLayout->addWidget(new QPushButton("Button in Section", section));
+
+    section->setContentLayout(*anyLayout);
+
+## Sample Animation
+
+![section opening and closing](example.gif)