Merge pull request #106 from jagajaga/master

Change `/bin/bash` to `/usr/bin/env bash`

install

-#!/bin/bash
+#!/usr/bin/env bash
 
 cd `dirname $BASH_SOURCE`
 fzf_base=`pwd`

uninstall

-#!/bin/bash
+#!/usr/bin/env bash
 
 confirm() {
   while [ 1 ]; do