Filter out of `nvm ls` things that start with a dot. Fixes #421, closes #422.

nvm.sh

@@ -133,7 +133,7 @@ nvm_ls() {
     VERSIONS="$PATTERN"
   else
     VERSIONS=`find "$NVM_DIR/" -maxdepth 1 -type d -name "$(nvm_format_version $PATTERN)*" -exec basename '{}' ';' \
-      | sort -t. -u -k 1.2,1n -k 2,2n -k 3,3n`
+      | sort -t. -u -k 1.2,1n -k 2,2n -k 3,3n | grep -v '^ *\.'`
   fi
   if [ -z "$VERSIONS" ]; then
       echo "N/A"

test/fast/Listing versions/Running "nvm ls" should filter out ".nvm"

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+mkdir ../../../v0.1.3
+mkdir ../../../v0.2.3
+
+. ../../../nvm.sh
+
+[ -z `nvm ls | grep '^ *\.'` ]
+# The result should contain only the appropriate version numbers.