Merge pull request #59 from jamlamberti/fix-exception-str

Fix up exception value and typo in README

Author: astrojuanlu

README.rst

@@ -10,7 +10,7 @@ Orbit Predictor
 Orbit Predictor is a Python library to propagate orbits of Earth-orbiting objects (satellites, ISS, 
 Santa Claus, etc) using `TLE (Two-Line Elements set) <https://en.wikipedia.org/wiki/Two-line_element_set>`_
 
-Al the hard work is done by Brandon Rhodes implementation of 
+All the hard work is done by Brandon Rhodes implementation of 
 `SGP4 <https://github.com/brandon-rhodes/python-sgp4>`_. 
 
 We can say *Orbit predictor* is kind of a "wrapper" for the python implementation of SGP4

orbit_predictor/sources.py

@@ -102,7 +102,7 @@ def _get_tle(self, sate_id, date):
             data = fd.read()
             lines = data.split("\n")
             if not lines[0] == sate_id:
-                raise LookupError("Stored satellite id not")
+                raise LookupError("Stored satellite id not found")
             return tuple(lines[1:3])