added ui to script names, great readme rewrite

RenumberSheetsFromSelected-DS/readme.md

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+# Renumber sheets from selected
+
+Add +1 to sheets from the selected, so you can add a new sheet inbetween.
+
+## Example
+
+Your sheets numbered like this:
+
+- A01
+
+- A02
+
+- A03
+
+- ...
+
+You want to add a new sheet numbered A02.
+
+Run the script, select the current sheet A02, write "A" to the prefix box (without the quotation marks).
+
+Your new sheet numbers will look like this: (Note the missing A02)
+
+- A01
+
+- A03
+
+- A04
+
+- ...
+
+Now you can add sheet A02. It won't touch those sheets wich don't start with the aforementioned prefix.
+
+## Requirements
+
+Data shapes