readme: Prepare for npm publication

README.md

@@ -1,4 +1,4 @@
-# postman-to-k6
+# postman-to-k6 ![CircleCI branch](https://img.shields.io/circleci/project/github/loadimpact/postman-to-k6/master.svg)
 
 Convert a [Postman collection](https://www.getpostman.com/docs/collections) to [k6 script](https://docs.k6.io/docs).
 
@@ -18,12 +18,24 @@ Supported Features:
 
 ## Usage
 
-Install with npm to get the `postman-to-k6` command.
+**Install**:
 
+![npm](https://img.shields.io/npm/v/postman-to-k6.svg) ![npm](https://img.shields.io/npm/dw/postman-to-k6.svg)
+
+Globally, and preferably using [nvm](/~https://github.com/creationix/nvm) (at least on Unix/Linux systems to avoid filesystem permission issues when using sudo):
 ```shell
 npm install -g postman-to-k6
 ```
 
+Locally, into `./node_modules`:
+```shell
+npm install postman-to-k6
+```
+
+Note that this will require you to run the converter with `node node_modules/postman-to-k6/bin/postman-to-k6.js ...`.
+
+**Convert**:
+
 Pass a collection export to convert.
 
 ```shell
@@ -76,6 +88,11 @@ A collection of Postman examples are located under `example`.
   have to generate new ones.
 - File format v1.
 
+## Other similar tools
+
+- [jmeter-to-k6](/~https://github.com/loadimpact/jmeter-to-k6/): Convert
+  JMeter JMX files to k6 JS.
+
 ## Credits
 
 Thanks to [bookmoons](/~https://github.com/bookmoons) for creating this tool. Also, thanks to [borjacampina](/~https://github.com/borjacampina) for creating the original incarnation of the tool.