Installation failed when npm is not installed

[vladimir-low]

There is no way to install Profiler or dependencies via make when npm is missing in the system.

Steps to reproduce:

make deps_install
make install

Expected result:

All required dependencies are installed. Profiler are installed successfully.

Actual result:

"npm install
make: npm: Command not found
make: *** [deps_install] Error 127"

Possible solution:

Verify/Install npm at the very first step. Otherwise, document it in Prerequisites section.

Consider include the following into Makefile. But need to keep it cross-platform somehow:
packages:
[ -z dpkg -l | grep libx11-dev ] && sudo apt-get install libx11-dev
.PHONY: packages

[nvdv]

Thanks for reporting!

Installing npm during make install is pretty tricky, since there are many platforms and each one has several ways to do it properly.

I'll fix README.md.