[scrooge]: Portable shebang

Problem:

/bin/bash is not available on non-FHS distros, such as NixOS

Solution:

Replace /bin/bash with /usr/bin/env bash

Result:

Closes #366

Differential Revision: https://phabricator.twitter.biz/D1107604

Author: andreoss

pushsite.bash

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

sbt

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -eo pipefail
 

scrooge-generator-tests/src/test/resources/gen_gold_files.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -euxo pipefail
 

scrooge-linter/src/scripts/linter-test

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Run from source root
 # e.g. ./pants bundle scrooge/scrooge-linter:app \