add --version

README.md

@@ -25,8 +25,9 @@ or with pip:
 
 ```
 $ pass2csv --help
-usage: pass2csv [-h] [-b path] [-g executable] [-a] [--encodings encodings]
-                [-e pattern] [-f name pattern] [-l name pattern]
+usage: pass2csv [-h] [-b path] [-g executable] [-a]
+                [--encodings encodings] [-e pattern] [-f name pattern]
+                [-l name pattern] [--version]
                 STOREPATH OUTFILE
 
 positional arguments:
@@ -37,22 +38,25 @@ options:
   -h, --help            show this help message and exit
   -b path, --base path  path to use as base for grouping passwords
   -g executable, --gpg executable
-                        path to the gpg binary you wish to use (default 'gpg')
+                        path to the gpg binary you wish to use (default:
+                        'gpg')
   -a, --use-agent       ask gpg to use its auth agent
   --encodings encodings
-                        comma-separated text encodings to try, in order, when
-                        decoding gpg output (default 'utf-8')
+                        comma-separated text encodings to try, in order,
+                        when decoding gpg output (default: 'utf-8')
   -e pattern, --exclude pattern
-                        regexp for lines which should not be exported, can be
-                        specified multiple times
+                        regexp for lines which should not be exported, can
+                        be specified multiple times
   -f name pattern, --get-field name pattern
-                        a name and a regexp, the part of the line matching the
-                        regexp will be removed and the remaining line will be
-                        added to a field with the chosen name. only one match
-                        per password, matching stops after the first match
+                        a name and a regexp, the part of the line matching
+                        the regexp will be removed and the remaining line
+                        will be added to a field with the chosen name.
+                        only one match per password, matching stops after
+                        the first match
   -l name pattern, --get-line name pattern
-                        a name and a regexp for which all lines that match are
-                        included in a field with the chosen name
+                        a name and a regexp for which all lines that match
+                        are included in a field with the chosen name
+  --version             show program's version number and exit
 ```
 
 

pass2csv

@@ -8,6 +8,8 @@ import sys
 
 import gnupg
 
+__version__ = '1.0.0'
+
 logging.basicConfig(level=logging.INFO, format='%(message)s')
 
 
@@ -238,6 +240,12 @@ def parse_args(args=None):
         dest='get_lines'
     )
 
+    parser.add_argument(
+        '--version',
+        action='version',
+        version='%(prog)s ' + __version__
+    )
+
     return parser.parse_args(args)