How to upgrade from vim 7.3 to 7.4 on Mac Os El Capitana

Hi I am new to VIM and am determined to learn it and am trying to install vim 7.4 as some plugins only work with vim 7.4 version and my max os el capitana has 7.3. I have tried following several instructions through all the night but was unable to get the default version to be vim 7.4.

I have installed via brew with system default override flags and when i do vim --verison it shows me as if it is vim 7.4 but when i open a file vim {filename} it again reverts back to 7.3 . Any help in this regard would be greatly appreciated


if you type which vim in terminal what do you get?
if brew was successful it should be