Update verchew to 0.5

.travis.yml

@@ -12,7 +12,7 @@ env:
     - RANDOM_SEED=0
 
 before_install:
-  - make doctor || echo "Some system dependencies might be missing"
+  - make doctor
 
 install:
   - make install

bin/verchew

@@ -36,7 +36,7 @@ from collections import OrderedDict
 from subprocess import Popen, PIPE, STDOUT
 import logging
 
-__version__ = '0.4'
+__version__ = '0.5'
 
 PY2 = sys.version_info[0] == 2
 CONFIG_FILENAMES = ['.verchew', '.verchewrc', 'verchew.ini', '.verchew.ini']
@@ -63,7 +63,7 @@ def main():
     path = find_config(args.root)
     config = parse_config(path)
 
-    if not check_dependencies(config):
+    if not check_dependencies(config) and args.exit_code:
         sys.exit(1)
 
 
@@ -75,7 +75,9 @@ def parse_args():
     parser.add_argument('-v', '--verbose', action='count', default=0,
                         help="enable verbose logging")
     parser.add_argument('-r', '--root', metavar='PATH',
-                        help="use a custom project root")
+                        help="specify a custom project root directory")
+    parser.add_argument('--exit-code', action='store_true',
+                        help="return a non-zero exit code on failure")
 
     args = parser.parse_args()