Add readme

Author: TTWNO

README.md

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+# formatting-tools
+
+This is very... miscellaneous repo.
+Basically, random one-off scripts that do something small enough that it doesn't make sense to create an entirely different repository for it.
+
+All tools are explained by a second level header.
+
+## `replace-bad-characters`
+
+This script removes common bad characters from the `pdftotext` tool.
+It does *not* catch them all though.
+
+### Usage
+
+```bash
+$ replace-bad-characters test.txt
+```
+
+## `format-paragraph.vim`
+
+This vim script defines a function that will (mostly) format sentences on one line.
+It screws up on colons and and question marks if text is after it, but otherwise is fairly accurate.