1. After download, extract the .zip to your preferred location. 
2. To insert a shader into your Scene, Choose "File --> Append"
3. Navigate the the extracted .Blend File
4. Navigate to the material section of the .blend
5. Select the material labeled "Hologram"
6. Press "Append from Library"
7. You will now find the node group under the material menu.

Tip: for faster preview renderings, disconnect the volume input of the material.

For further questions please contact me via the support system.