Update README

Tweaking line-breaks, and mentioning the tests.

README.md

@@ -72,17 +72,10 @@ $ sudo cp eksd /usr/local/bin/eksd
 Bam, you've made and installed a binary! Cool!
 
 ### Tests
-eksd’s tests can be run from a REPL using `ASDF:TEST-SYSTEM`, or from the
-Makefile target “test”.
+eksd’s tests can be run using the `test` Makefile target, or simply
+`(asdf:test-system :eksd)` and `(asdf:test-system :eksd-unix)`.
 
-```
-* (asdf:test-system :eksd)
-* (asdf:test-system :eksd/unix)
-```
-
-```
-`$ make test
-```
+`$ make test`
 
 
 ## Misc

src/unix.lisp

@@ -283,10 +283,6 @@
 
 ;; list → list
 (defun de-tail (list)
-  "Return a list sans its last element."
+  "Remove the last element from a list."
   (reverse (cdr (reverse list))))
 
-;; list → object
-(defun tail (list)
-  "Return the last element of a list."
-  (car (last list)))