Add --version parameter and version tracking

VERSION

@@ -0,0 +1 @@
+0.3-development

opendm/config.py

@@ -332,6 +332,10 @@ def config():
                         help='Generates a benchmark file with runtime info\n'
                              'Default: %(default)s')
 
-    #TODO: Add version, gdal options
+    #TODO: Add gdal options
+    parser.add_argument('--version',
+                        action='store_true',
+                        default=False,
+                        help='Displays version number and exits. ')
 
     return parser.parse_args()

run.py

@@ -4,6 +4,7 @@ from opendm import log
 from opendm import config
 from opendm import system
 from opendm import io
+from opendm import context
 
 import sys
 import ecto
@@ -11,6 +12,9 @@ import os
 
 from scripts.odm_app import ODMApp
 
+with open(io.join_paths(context.root_path, 'VERSION')) as version_file:
+    __version__ = version_file.read().strip()
+
 
 def usage():
     log.ODM_ERROR('You must specify a project name:')
@@ -21,10 +25,13 @@ def usage():
 
 if __name__ == '__main__':
 
-    log.ODM_INFO('Initializing OpenDroneMap app - %s' % system.now())
-
     args = config.config()
 
+    if args.version:
+        log.ODM_INFO(__version__)
+        sys.exit(0)
+
+    log.ODM_INFO('Initializing OpenDroneMap app - %s' % system.now())
 
     # Force to provide the images path
     if args.project_path is None: