Merge pull request #795 from MunifTanjim/nvm_completion

add completion for nvm

completion/available/nvm.completion.bash

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+# nvm (Node Version Manager) completion
+
+if [ "$NVM_DIR" ] && [ -r "$NVM_DIR"/bash_completion ];
+then
+  . "$NVM_DIR"/bash_completion
+fi