Update the wrong variable used in rb20 function. Fixes #1762

Signed-off-by: Joni Chandra <joniliciously@gmail.com>
Replace no unicode glyph on hexa string
Merge pull request #1763 from jonilicious/master

RVM plugin - Fixes wrong variable used in 'rb20' function
Merge pull request #2065 from prudprud/master

Replace no unicode glyph on hexa string
Merge branch 'master' of https://github.com/robbyrussell/oh-my-zsh