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…vkit into richardalow-csvcut-open-range
removed [-j JOIN] option from usage, not sure it is valid - this is my usage output:
```
$ pip show csvkit
---
Name: csvkit
Version: 0.9.0
Location: /usr/local/lib/python2.7/site-packages
Requires: xlrd, sqlalchemy, openpyxl, six, python-dateutil, dbf
$ csvjoin
usage: csvjoin [-h] [-d DELIMITER] [-t] [-q QUOTECHAR] [-u {0,1,2,3}] [-b]
[-p ESCAPECHAR] [-z MAXFIELDSIZE] [-e ENCODING] [-S] [-v] [-l]
[--zero] [-c COLUMNS] [--outer] [--left] [--right]
[FILE [FILE ...]]
csvjoin: error: You must specify at least two files to join.
```
This is to address issue #355 and to allow json to be 'streamed' - that is, each object in the array be written out separated by a newline, rather than output as one single array. Allowing this means we can convert large csv streams to json without waiting until the end to see the output. Many json-processing tools can deal with streaming json (for instance jq).
Streaming doesn't make sense for when data is being output as one json object - that is if you specify a key column or lat/lon options. If you try and specify --stream and also --key or --lat/--lon then you will get an error.
(PS: Great tool, thanks!)
Grammar nazi
Update csvjoin.rst
…nifersmith/csvkit into jennifersmith-355_streaming_json_documents
…into themiurgo-json-multiline
Typo correction.
A few changes to Lesson 3
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