Added articles in markdown

Added all (missing) current articles of each quadrant.

radar/2017-03-01/npm.md

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+---
+title:      "NPM"
+ring:       adopt
+quadrant:   tools
+
+---
+[NPM](https://www.npmjs.com/) is one of, if not the most, popular package manager for JavaScript. Because of the big community, you can find nearly every dependency in npm.
+
+Instead of other package managers such as [bower](/tools/bower.html), you have to write your packages as [modules](https://en.wikipedia.org/wiki/CommonJS). This unifies the way you have to use, test and, of course, understand dependencies.
+
+NPM creates a tree for your dependencies and their nesting dependencies. Because of this, you don't need to handle version conflicts, since every dependency uses there own version of e.g. [webpack](/tools/webpack.html).
+
+With [shrinkwrap](https://docs.npmjs.com/cli/shrinkwrap) you have a robust tool to lock down and manage the versions of your dependencies - following the [Pin (external) dependencies](/methods-and-patterns/pin-external-dependencies.html) approach.
+
+For each package you have to classify your dependencies:
+
+-   dependencies are needed for use without the need of pre compiling, e.g. [lodash](https://lodash.com/)
+-   devDependencies are needed for development only, e.g. testing frameworks or pre compiler e.g. [babel](/languages-and-frameworks/babel.html)
+-   peerDependencies you have to provide for using the package
+
+With [scripts](https://docs.npmjs.com/misc/scripts) you get support for the most common build lifecycle steps, e.g. build, start, test ...
+
+Other useful features:
+
+-   mirror support for your own repository (e.g. [artifactory](/platforms-and-aoe-services/artifactory.html))
+-   can be used for server and client JavaScript development (see [node.js](/languages-and-frameworks/node-js.html) )