This is the blend file used in Loading Animation tutorial you just saw or about to see. 

In this tutorial I have tried to create a loading animation using shaders. 

The Shaders include: 

• Mix shader
• Emission
• Transparent
• Color Ramp
• Gradient Texture
• Mapping
• Geometry

The above mentioned shaders have been applied to a flower like design that has been created using a Bezier Circle and a Circle object.