Merge pull request #524 from kahst/readme-update

Updated --output_file to --combine_results in README.adoc

README.adoc

@@ -517,7 +517,7 @@ Here's a complete list of all command line arguments:
 --sf_thresh, Minimum species occurrence frequency threshold for location filter. Values in [0.01, 0.99]. Defaults to 0.03.
 --classifier, Path to custom trained classifier. Defaults to None. If set, --lat, --lon and --locale are ignored.
 --fmin and --fmax, Minimum and maximum frequency for bandpass filter. Defaults to 0 and 15000.
---output_file, Path to combined Raven selection table. If set and rtype is 'table', all results will be combined into this file. Defaults to None.
+--combine_results, Also outputs a combined file for all the selected result types. If set combined tables will be generated. Defaults to False.
 --skip_existing_results, skip files that have already been analyzed. Defaults to False.
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