Add setup script for geomagio

setup.py

+from distutils.core import setup
+
+setup(
+    name='geomag-algorithms',
+    version='0.0.0',
+    desription='USGS Geomag IO Library',
+    url='https://github.com/usgs/geomag-algorithms',
+    packages=[
+        'geomagio',
+        'geomagio.iaga2002'
+    ],
+    install_requires=[
+        'numpy',
+        'matplotlib',
+        'scipy',
+        'obspy'
+    ],
+    scripts=[
+        'bin/xyz.py'
+    ]
+)