also allow to specify host (by default: 0.0.0.0)
also change node module version from fixed version number to at least (will not upgrade to next major release)
Coverage decreased (-1.09%) to 94.477% when pulling 2dbcc45f332a5061cc34d4265308037143f65196 on stanleyxu2005:fix_11 into 0bd6787c5205fdcebf7a6c77ea210eb429208b3e on ivaylopivanov:master.
also allow to specify host (by default: 0.0.0.0) also change node module version from fixed version number to at least (will not upgrade to next major release)