While running the "node mke server" command in GitBash today I was getting the following error:
'python2.7' is not recognized as an internal or external command, operable program or batch file.
Download the Python release from here http://www.python.org/download/releases/2.7.5/ and install it.
Set the "C\Python27" path in environment variables of system properties.
In make.js of pdf.js source set PYTHON_BIN variable value to python