The BIMvie.ws release is a JAR file. This way you can easily add it as a BIMserver plugin (just put it in the 'plugins' directory of your BIMserver; you might want to restart). You can however also install this on any webserver such as Apache or NGinx or perhaps something like IIS too. Just unzip the JAR file.
Note for BIMserver 1.5: The installation process should already have asked you whether you wanted to install BIMvie.ws. You can't put plugins jar files in the plugins folder anymore in this version of BIMserver.