DSV: Add csvtk

README.md

@@ -55,6 +55,7 @@ Awk is a POSIX-standard command line tool and programming language for processin
 | [csv2html](https://github.com/dbohdan/csv2html) | Convert CSV to HTML tables. |
 | [csvfaker](https://github.com/pereorga/csvfaker) | Generate CSV files with fake data. Supports different types of fake data in different locales: names, cities, jobs, email addresses, and others. |
 | [csvfix](https://bitbucket.org/neilb/csvfix) | A multitool. Compare, filter, normalize, split, and validate CSV files. Reorder, remove, split, and merge fields. Convert data between fixed-width, multi-line, XML, and DSV format. Generate SQL statements. [Documentation](https://neilb.bitbucket.io/csvfix/manual/csvfix16/csvfix.html). |
+| [csvtk](https://github.com/shenwei356/csvtk) | Search, sample, cut, join, transpose, and sort CSV/TSV files. Rename columns. Replace fields and generate new fiends from existing fields. Plot data as vector or raster histograms and box, line, and scatter plots. Convert CSV to Markdown. Convert XLSX to CSV. Split XLSX sheets. |
 | [GNU datamash](http://www.gnu.org/software/datamash/) | Perform statistical operations on text input. |
 | [jp (sgreben)](https://github.com/sgreben/jp) | Plot data. See the [JSON](#json) section. |
 | [Miller](https://github.com/johnkerl/miller) | `sed`, `awk`, `cut`, `join` and `sort` for name-indexed data such as CSV and tabular JSON. |