Modify nvm_version_path to use nvm_version_greater.

nvm.sh

@@ -122,8 +122,10 @@ nvm_version_path() {
   if [ -z "$VERSION" ]; then
     echo "version is required" >&2
     return 3
-  elif [ ! -z "$VERSION" ]; then
+  elif nvm_version_greater 0.12.0 "$VERSION"; then
     echo "$(nvm_version_dir old)/$VERSION"
+  else
+    echo "$(nvm_version_dir new)/$VERSION"
   fi
 }
 

test/fast/Unit tests/nvm_version_path

@@ -6,4 +6,6 @@ die () { echo $@ ; exit 1; }
 
 [ "$(nvm_version_path foo)" = "$NVM_DIR/foo" ] || die '"nvm_version_path foo" did not return correct location'
 [ "$(nvm_version_path 2>&1)" = "version is required" ] || die '"nvm_version_path" did not error out'
+[ "$(nvm_version_path v0.11.0)" = "$NVM_DIR/v0.11.0" ] || die 'old version has the wrong path'
+[ "$(nvm_version_path v0.12.0)" = "$NVM_DIR/versions/v0.12.0" ] || die 'new version has the wrong path'