Added a README

README.md

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+#Guile Schemeing
+The purpose of this repository is to hold various small utilities I commonly
+use in Scheme. Running `make; make install` in the tk direcory will install
+sources to the Guile `(%site-dir)` and compiled .go files to the Guile 
+`(%site-ccache-dir)`. All modules are installed under the prefix `tk/`
+
+## short.scm
+Aliases to shorten common names.     
+`(string->symbol)` => `(ss>)`     
+`(symbol->string)` => `(ss<)`     
+`(ssa>)` appends strings into a symbol
+
+## listlogic.scm
+Various logical tools.      
+`(display-if-not)` Displays a given string if the first argument is `#f`     
+`(flatten)` De-nests lists into a form where no `(car)` contains a list     
+`(lp&)` Tests some predicate pairwise over two lists     
+`(l&)` Tests the equality according to `eq?` over two lists, returns as a list
+all passing elements     
+`(if-some)` The common `(if var var)` pattern     
+`(if-some-else)` The common `(if var var default)` pattern
+
+## mcron.scm
+Constants and functions for working with time, schedules and mcron     
+`sec/min` `sec/hour` `sec/day` `sec/week` Useful constants     
+`sec/mins` `sec/hours` `sec/days` `sec/weeks` Readable shortcuts, `(sec/mins 4)`
+rather than `(* 4 60)` or worse `240`     
+`(step-from)` Normalize a time to be the next step sized increment from a base time     
+`(str->secs)` 
+`(strf->secs)` 
+`(current-date-string)`
+`(yesterday-date-string)`
+
+## ports.scm
+Convenience when working with ports     
+`(port-rewind!)`