Features of FolderMount:
* Mount internal SD card folders to external SD folders.
* Move content from internal to external when a pair is added. (Dialog prompt)
* Support for Android 2.3 – 4.4.
* Holo themed throughout and an intuitive GUI design.
* It will check SDCARD mount status and remount if necessary.

Screenshot_2014-07-06-20-05-37 Screenshot_2014-07-06-20-05-57

Procedure :
★ Rooted Phone
★ Open folder mount.
★ Click on (+) sign
★ Select source & destination
★ Click on check mark then yes
★ Now select pin icon of created file
★ done

Download link : foldermount v2.6.8 pro

Video Tutorial: