Move pages under tldr, lint run.sh, update docs

tldr/nrm

@@ -0,0 +1,30 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# nrm
+
+> npm registry manager.
+> Helps to easily switch between different npm registries.
+> More information: <https://github.com/Pana/nrm>.
+
+- List all registries:
+
+`nrm ls`
+
+- Change to a particular registry:
+
+`nrm use {{registry}}`
+
+- Show the response time for all registries:
+
+`nrm test`
+
+- Add a custom registry:
+
+`nrm add {{registry}} {{url}}`
+
+- Delete a registry:
+
+`nrm del {{registry}}`