ClearScript Installer encapsulates everything needed to properly add ClearScript to your project using the V8 engine.
Installing this package adds all the dependencies to the target project including the proper V8 assemblies with necessary properties set for build.

FYI: This package has a version of ClearScript compiled against .Net 4.5 only.

Clearscript will attempt to set the copy to output correctly in the case of a web project, but if this fails:

For web projects, set the following on all ClearScripts/V8 dlls added to the project: Copy to Output Directory: Do not copy