I have clonned your repo and facing some issues after doing npm i and local.properties to the folder of android.

[TalalBhatti]

• What went wrong:
  Execution failed for task ':generateDebugRFile'.

Could not resolve all files for configuration ':debugRuntimeClasspath'.
Could not resolve com.github.ctodobom:OpenCV-3.1.0-Android:-SNAPSHOT.
Required by:
project :
> Could not resolve com.github.ctodobom:OpenCV-3.1.0-Android:-SNAPSHOT.
> Unable to load Maven meta-data from https://jitpack.io/com/github/ctodobom/OpenCV-3.1.0-Android/-SNAPSHOT/maven-metadata.xml.
> Could not get resource 'https://jitpack.io/com/github/ctodobom/OpenCV-3.1.0-Android/-SNAPSHOT/maven-metadata.xml'.
> Could not GET 'https://jitpack.io/com/github/ctodobom/OpenCV-3.1.0-Android/-SNAPSHOT/maven-metadata.xml'.
> jitpack.io