Add requirements to README

[dansimau]

Add a section to the README documenting the requirements for ringpop-node.

This should help people run into trouble when trying to npm install on a newer version of node1.

[motiejus]

LGTM

[thanodnl]

The change to the readme looks good and can be merged, but shall we also specify the version in the package.json under the engines section

[mennopruijssers]

LGTM but let's add the engines-section as well :)

[thanodnl]

I'm not completely sure if 0.10.x is the right version. I was unable to do an install of the dependencies with the following versions:

• 0.10.0
• 0.10.1
• 0.10.2
• 0.10.3

All seem to have troubles with our package json dependencies section where the ^ is used to ask for compatible versions of packages. Versions that worked for me are the following:

• 0.10.26
• 0.10.32

Even though the problem is not with node but rather with nvm I wonder if we should specify a higher version of node to make sure that nvm install works. We can also figure out which version of nvm has support for ^ versions but I couldn't easily find when support was added. npm@2.8.2 has support (shipped with node@0.10.26) and npm@1.2.14 (shipped with node@0.10.0) does not have support.

[dansimau]

Ah thanks @thanodnl for looking into this.

Should we specify ^0.10.32 then (that is the version we typically test with anyway)?

Maybe I should do a sanity check of versions above 0.10.32.

[dansimau]

Travis tests run on v0.10.45 successfully so I'm just gonna merge this.

[mennopruijssers]

LGTM!

[dansimau]

Merged in commit ee72383.