Minor shell script changes

bin/build_gem → bin/build-gem

@@ -1,10 +1,9 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
-# Exit if any subcommand fails
 set -e
 
 VERSION=$(ruby -r ./lib/administrate/version.rb -e "puts Administrate::VERSION")
 yarn run build
 yarn run build:css
 gem build administrate.gemspec
-gem install administrate-${VERSION}.gem
+gem install "administrate-${VERSION}.gem"

bin/dev

@@ -1,4 +1,6 @@
-#!/usr/bin/env sh
+#!/bin/sh
+
+set -e
 
 if ! gem list foreman -i --silent; then
   echo "Installing foreman..."

bin/dev_assets → bin/dev-assets

@@ -1,3 +1,3 @@
-#!/usr/bin/env sh
+#!/bin/sh
 
 "$(dirname "$0")"/dev -m js=1,css=1

bin/release

@@ -1,10 +1,11 @@
-# Exit if any subcommand fails
+#!/bin/sh
+
 set -e
 
 VERSION=$(ruby -r ./lib/administrate/version.rb -e "puts Administrate::VERSION")
 echo "Version $VERSION"
 
-$(dirname "$0")/build_gem
+$(dirname "$0")/build-gem
 
 sed -i.bak "s/^gemspec$/gem \"administrate\", \"`echo $VERSION`\"/g" Gemfile
 rm Gemfile.bak