Convert longitude and latitude to floats, update the readme

Author: Mark Costello

README.md

@@ -37,12 +37,12 @@ Download the tarball, untar and run `python setup.py install`
     The following returns the information as a python object
     """
     pylocinfo = pyloc.info
-    pylocinfo.ip => '8.8.8.8'
-    pylocinfo.city => 'Mountain View, CA'
-    pylocinfo.country_name => 'UNITED STATES'
-    pylocinfo.country_code => 'US'
-    pylocinfo.latitude => '37.402'
-    pylocinfo.longitude => '-122.078'
+    print pylocinfo.ip     # '8.8.8.8'
+    print pylocinfo.city    # 'Mountain View, CA'
+    print pylocinfo.country_name    # 'UNITED STATES'
+    print pylocinfo.country_code    # 'US'
+    print pylocinfo.latitude    # 37.402
+    print pylocinfo.longitude   # -122.078
 
 
     """

pylocation/core.py

@@ -53,8 +53,14 @@ def __init__(self, properties):
         self.city = properties['city']
         self.country_name = properties['country_name']
         self.country_code = properties['country_code']
-        self.latitude = properties.get('lat', None)
-        self.longitude = properties.get('lng', None)
+        self.latitude = None
+        self.longitude = None
+        latitude = properties.get('lat', None)
+        if latitude:
+            self.latitude = float(latitude)
+        longitude = properties.get('lng', None)
+        if latitude:
+            self.longitude = float(longitude)
 
 class PyLocation(object):
     """The :class `PyLocation` object. Used to perform the various operations