nushell#4924 Update data types with binary literal syntax (#390)

Author: merkrafter

book/types_of_data.md

@@ -171,12 +171,15 @@ The full list of filesize units are:
 
 Binary data, like the data from an image file, is a group of raw bytes.
 
-You can write binary as a literal using the `0x[...]` form:
+You can write binary as a literal using any of the `0x[...]` or `0b[...]` forms:
 
 ```
 > 0x[1F FF]
+> 0b[1 1010]
 ```
 
+Incomplete bytes will be left-padded with zeros.
+
 ## Structured data
 
 Structured data builds from the simple data. For example, instead of a single integer, structured data gives us a way to represent multiple integers in the same value. Here's a list of the currently supported structured data types: records, lists and tables.