Add README

README.md

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+# tuc (when cut doesn't cut it)
+
+## Help
+
+```
+tuc 0.1.0
+When cut doesn't cut it.
+
+USAGE:
+    tuc [FLAGS] [OPTIONS]
+
+FLAGS:
+    -p                      Display the delimiter at most once in a sequence
+    -h, --help              Prints help information
+    -s, --only-delimited    Do not print lines not containing delimiters
+    -V, --version           Prints version information
+
+OPTIONS:
+    -d, --delimiter <delimiter>    Delimiter to use to cut the text into pieces [default: 	]
+    -f, --fields <fields>          Fields to keep, like 1:3 or 3,2 or 1: or 3,1:2 or -3 or -3:-2 [default: 1:]
+    -r <replace-delimiter>         Replace the delimiter
+    -t <trim>                      Valid trim values are (l|L)eft, (r|R)ight, (b|B)oth
+```
+
+## Examples
+
+```
+# Cut using a greedy delimiter
+$ echo "foo    bar   baz" | tuc -d ' ' -f 2:
+bar   baz
+```
+
+```
+# Compress delimiters after cut
+$ echo "foo    bar   baz" | tuc -d ' ' -f 2: -p
+bar baz
+```
+
+```
+# Replace remaining delimiters with something else
+$ echo "foo    bar   baz" | tuc -d ' ' -f 2: -p -r '/'
+bar/baz
+```