Added 'elpa-install' target.

Makes it easier to install the elpa package from the tar package
during development.

Author: arnested

Makefile

@@ -1,4 +1,4 @@
-.PHONY: all
+.PHONY: all elpa-package elpa-install
 
 VERSION=0.1.0
 
@@ -13,3 +13,10 @@ README: README.md
 # create a tar ball in package.el format for uploading to http://marmalade-repo.org
 elpa-package: README drupal-mode.el drupal-mode-pkg.el drupal-mode.info dir
 	tar -c -s "@^@drupal-mode-${VERSION}/@" -f drupal-mode-${VERSION}.tar $^
+
+elpa-install: elpa-package
+	emacs --batch --eval "(progn \
+		(require 'package)\
+		(add-to-list 'package-archives '(\"marmalade\" . \"http://marmalade-repo.org/packages/\"))\
+		(package-initialize)\
+		(package-install-file \"`pwd`/drupal-mode-${VERSION}.tar\"))"