Added installer script

install.py

@@ -0,0 +1,34 @@
+from __future__ import print_function
+
+import subprocess
+
+def manage(*arg):
+    args = ["python", "InvenTree/manage.py"]
+
+    for a in arg:
+        args.append(a)
+
+    subprocess.call(args)
+
+# Install django requirements
+subprocess.call(["pip", "install", "django", "-q"])
+subprocess.call(["pip", "install", "djangorestframework", "-q"])
+
+# Initial database setup
+manage("migrate")
+
+# Make migrations for all apps
+manage("makemigrations", "part")
+manage("makemigrations", "stock")
+manage("makemigrations", "supplier")
+manage("makemigrations", "project")
+manage("makemigrations", "track")
+
+# Update the database
+manage("migrate")
+
+# Check for errors
+manage("check")
+
+print("\n\nAdmin account:\nIf a superuser is not already installed,")
+print("run the command 'python InvenTree/manage.py createsuperuser'")