Improve shell help to reflect all possible options
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                 Key: HBASE-3539
                 URL: https://issues.apache.org/jira/browse/HBASE-3539
             Project: HBase
          Issue Type: Bug
          Components: shell
    Affects Versions: 0.90.0
            Reporter: Lars George
            Priority: Trivial
             Fix For: 0.92.0


The shell is not consistent in its help texts. For example:

{code}
Scan a table; pass table name and optionally a dictionary of scanner
specifications.  Scanner specifications may include one or more of
the following: LIMIT, STARTROW, STOPROW, TIMESTAMP, or COLUMNS.  If
no columns are specified, all columns will be scanned.
{code}

but in the code you have

{code}
 filter = args["FILTER"]
 startrow = args["STARTROW"] || ''
 stoprow = args["STOPROW"]
 timestamp = args["TIMESTAMP"]
 columns = args["COLUMNS"] || args["COLUMN"] || get_all_columns
 cache = args["CACHE_BLOCKS"] || true
 versions = args["VERSIONS"] || 1
{code}

VERSIONS is missing from the help. 

Check all commands and make sure all options are stated and examples given.

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