Add install target

Doesn't quite work yet due to the django-extra-views conflict of #7.  It
should start working once that issue is resolved.

Makefile

@@ -1,5 +1,9 @@
 .PHONY: sandbox geoip
 
+install:
+	python setup.py develop
+	pip install -r requirements.txt
+
 geoip:
 	wget http://geolite.maxmind.com/download/geoip/database/GeoLiteCity.dat.gz
 	gunzip GeoLiteCity.dat.gz
@@ -10,5 +14,4 @@ sandbox: install
 	-spatialite sandbox/sandbox/sandbox.sqlite3 "SELECT InitSpatialMetaData();"
 	./sandbox/manage.py syncdb --noinput
 	./sandbox/manage.py migrate
-	./sandbox/manage.py loaddata sandbox/fixtures/auth.json
-	./sandbox/manage.py loaddata countries.json
+	./sandbox/manage.py loaddata sandbox/fixtures/auth.json countries.json