fix running on linux

Author: docmarionum1

README.md

@@ -24,7 +24,7 @@ Extract the .zip to a folder of your choice and set the `GEOFILES` and `LD_LIBRA
 
 ```shell
 $ export GEOFILES=/var/geosupport/version-17c/fls
-$ export LD_LIBRARY_PATH=/var/geosupport/version-17c/lib/
+$ export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/var/geosupport/version-17c/lib/
 ```
 
 ### Install python-geosupport

geosupport/geosupport.py

@@ -23,9 +23,7 @@ def __init__(self):
             elif self.platform.startswith('linux'):
                 import os
                 from ctypes import cdll
-                self.geolib = cdll.LoadLibrary(
-                    os.path.join(os.environ['LD_LIBRARY_PATH'], "libgeo.so")
-                )
+                self.geolib = cdll.LoadLibrary("libgeo.so")
             else:
                 raise Exception('This Operating System is currently not supported.')
         except OSError as e: