Add iojs support to `nvm_remote_version`

nvm.sh

diff --git a/nvm.sh b/nvm.sh
index 370517c..f81c7b7 100644
--- a/nvm.sh
+++ b/nvm.sh
@@ -207,8 +207,12 @@
   local PATTERN
   PATTERN="$1"
   local VERSION
-  VERSION="$(nvm_ls_remote "$PATTERN" | tail -n1)"
-  echo "$VERSION"
+  if nvm_is_iojs_version "$PATTERN"; then
+    VERSION="$(nvm_ls_remote_iojs "$PATTERN")"
+  else
+    VERSION="$(nvm_ls_remote "$PATTERN")"
+  fi
+  echo "$VERSION" | tail -n1
 
   if [ "_$VERSION" = '_N/A' ]; then
     return 3

test/fast/Unit tests/nvm_remote_version

diff --git a/test/fast/Unit tests/nvm_remote_version b/test/fast/Unit tests/nvm_remote_version
index f7fc377..16b6e3c 100755
--- a/test/fast/Unit tests/nvm_remote_version
+++ b/test/fast/Unit tests/nvm_remote_version
@@ -3,7 +3,7 @@
 die () { echo $@ ; cleanup ; exit 1; }
 
 cleanup() {
-  unset -f nvm_ls_remote
+  unset -f nvm_ls_remote nvm_ls_remote_iojs
 }
 
 . ../../../nvm.sh
@@ -11,25 +11,42 @@
 nvm_ls_remote() {
   echo "N/A"
 }
-
 OUTPUT="$(nvm_remote_version foo)"
 EXIT_CODE="$(nvm_remote_version foo >/dev/null 2>&1 ; echo $?)"
-
 [ "_$OUTPUT" = "_N/A" ] || die "nonexistent version did not report N/A"
 [ "_$EXIT_CODE" = "_3" ] || die "nonexistent version did not exit with code 3, got $EXIT_CODE"
 
+nvm_ls_remote_iojs() {
+  echo "N/A"
+}
+OUTPUT="$(nvm_remote_version iojs-foo)"
+EXIT_CODE="$(nvm_remote_version iojs-foo >/dev/null 2>&1 ; echo $?)"
+[ "_$OUTPUT" = "_N/A" ] || die "nonexistent version did not report N/A"
+[ "_$EXIT_CODE" = "_3" ] || die "nonexistent version did not exit with code 3, got $EXIT_CODE"
+
+
 nvm_ls_remote() {
   echo "test output"
   echo "more test output"
   echo "pattern received: _$1_"
 }
-
 OUTPUT="$(nvm_remote_version foo)"
 EXIT_CODE="$(nvm_remote_version foo >/dev/null 2>&1 ; echo $?)"
-
 [ "_$OUTPUT" = "_pattern received: _foo_" ] \
   || die "nvm_remote_version foo did not return last line only of nvm_ls_remote foo; got $OUTPUT"
 [ "_$EXIT_CODE" = "_0" ] || die "nvm_remote_version foo did not exit with 0, got $EXIT_CODE"
 
+nvm_ls_remote_iojs() {
+  echo "test iojs output"
+  echo "more iojs test output"
+  echo "iojs pattern received: _$1_"
+
+}
+OUTPUT="$(nvm_remote_version iojs-foo)"
+EXIT_CODE="$(nvm_remote_version iojs-foo >/dev/null 2>&1 ; echo $?)"
+[ "_$OUTPUT" = "_iojs pattern received: _iojs-foo_" ] \
+  || die "nvm_remote_version iojs-foo did not return last line only of nvm_ls_remote_iojs foo; got $OUTPUT"
+[ "_$EXIT_CODE" = "_0" ] || die "nvm_remote_version iojs-foo did not exit with 0, got $EXIT_CODE"
+
 cleanup