diff --git a/README.md b/README.md
index aaacc59..74886b6 100644
--- a/README.md
+++ b/README.md
@@ -6,16 +6,9 @@ __photo-to-kml__ creates a kml file that shows geotagged images in Google Earth.
 
 ## Installation ##
 
-```
-pip install simplekml
-```
-
-Then
-
 ```
 git clone http://git.wrl.unsw.edu.au:3000/gis-cad/photo-to-kml.git
-cd photo-to-kml
-python setup.py install
+pip install -e photo-to-kml
 ```
 
 ## Usage ##
diff --git a/photo_to_kml/__init__.py b/photo_to_kml/__init__.py
index 728a446..dc430ea 100644
--- a/photo_to_kml/__init__.py
+++ b/photo_to_kml/__init__.py
@@ -1 +1 @@
-from .photo_to_kml import main
+from .photo_to_kml import main
diff --git a/photo_to_kml/photo_to_kml.py b/photo_to_kml/photo_to_kml.py
index 27fa03c..c2f0d1e 100644
--- a/photo_to_kml/photo_to_kml.py
+++ b/photo_to_kml/photo_to_kml.py
@@ -20,6 +20,7 @@ Create a kml for a folder of photos, named 'image_folder'.
 """
 
 import os
+import sys
 import argparse
 from PIL import Image
 from PIL.ExifTags import TAGS, GPSTAGS
@@ -138,6 +139,12 @@ def main():
         metavar='IMAGE_FOLDER',
         help='name of input folder',
         default=None)
+
+    # Print usage if no arguments are provided
+    if len(sys.argv) == 1:
+        parser.print_help(sys.stderr)
+        sys.exit(1)
+
     args = parser.parse_args()
 
     # Get files in image directory
diff --git a/setup.py b/setup.py
index 91f112c..ccf4214 100644
--- a/setup.py
+++ b/setup.py
@@ -1,10 +1,11 @@
-from setuptools import setup
-
-setup(
-    name='photo_to_kml',
-    version='0.2.0',
-    packages=['photo_to_kml'],
-    entry_points={'console_scripts':['photo_to_kml = photo_to_kml:main']},
-    author='Dan Howe',
-    author_email='d.howe@wrl.unsw.edu.au',
-    description='Add geotagged images to a kml for viewing in Google Earth')
+from setuptools import setup
+
+setup(
+    name='photo_to_kml',
+    version='0.2.0',
+    packages=['photo_to_kml', 'PIL'],
+    install_requires=['simplekml'],
+    entry_points={'console_scripts':['photo_to_kml = photo_to_kml:main']},
+    author='Dan Howe',
+    author_email='d.howe@wrl.unsw.edu.au',
+    description='Add geotagged images to a kml for viewing in Google Earth')