Add version (-v and --version) option

Signed-off-by: Martin Sustrik <[email protected]>

ribosome.js

@@ -435,9 +435,14 @@ function rnawrite(s) {
     rnaln += m == null ? 0 : m.length;
 }
 
-if (process.argv.length < 3) {
+if (process.argv.length < 3 || process.argv[2] == "-h" ||
+      process.argv[2] == "--help") {
     usage();
 }
+if (process.argv[2] == "-v" || process.argv[2] == "--version") {
+    process.stderr.write("ribosome code generator, version 1.14\n");
+    process.exit(1);
+}
 
 var rnaopt;
 var dnafile;

ribosome.py

@@ -305,7 +305,8 @@ def rethrow(e, rnafile, linemap):
 import re
 
 # Set up the arguments parser.
-parser = argparse.ArgumentParser()
+parser = argparse.ArgumentParser(
+    version = "ribosome code generator, version 1.14")
 parser.add_argument('dna', type=file)
 parser.add_argument('--rna', action='store_true')
 

ribosome.rb

@@ -398,9 +398,13 @@ def rnawrite(s)
 ################################################################################
 
 # Parse the command line arguments.
-if(ARGV.size() < 1)
+if(ARGV.size() < 1 || ARGV[0] == "-h" || ARGV[0] == "--help")
     usage()
 end
+if ARGV[0] == "-v" || ARGV[0] == "--version"
+    puts "ribosome code generator, version 1.14"
+    exit(1)
+end
 if ARGV[0] == "--rna"
     if(ARGV.size() < 2)
         usage()