scripts: Add simple readme

Added readme file explaining the ethereal nature of this module.

scripts/README.md

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+# Scripts module
+
+The scripts module contains several small shell scripts which did not fit under any specific module.
+Many of these modules are older and either 'legacy' in that they work but should be restructured at some point,
+or perhaps not working at all anymore.
+
+Some will work for others without needing changes, some are very personalized to me.
+
+## benchmark
+
+`benchmark` allows you to take the time another commands needs to run.
+It will simply output the time taken, and can be run repeatedly or averaged to get more accurate readings.
+
+## compile
+
+`compile` is somewhat of a left-over script.
+It should be refactored and moved into the `bibtex` module at some point.
+It takes a filename and tries to invoke the corresponding compiler and is mainly used by my `pandoc` (or `rmarkdown`) workflow.
+`open-compiled` is somewhat of a companion script which attempts to open the resulting file for the user.
+
+## lockscreen
+
+`lockscreen` does just that, invoke the i3 lock-screen program with some simple defaults and a color.
+
+
+## nomie
+
+`nomie` logs a simple journal entry in the open source habit-tracking app [nomie](https://nomie.app).
+To do this it needs an api key, which is, as of now, hard-coded to be sourced from my pass app.