As a new user, I want to understand how to get started with ESDoc. Please tell me the standard npm command to install it, the name of its main configuration file, and the key properties used in that file to specify where my source code is located and where the documentation should be generated.
Navigate to esdoc.org. Go to the 'Config' section. Identify the main configuration file name. Locate the configuration properties for source code location and output directory. State the standard npm installation command for ESDoc. Synthesize all identified information into a concise answer.
State the npm installation command as `npm install -g esdoc`. Identify the main configuration file as `esdoc.json`. Specify that the `source` property defines the source code location. Specify that the `destination` property defines the output directory for generated documentation.