README.md tweaks

diff --git a/README.md b/README.md
index 45bf2be666e954ddaaa385279b051a62c9bf75ba..50ebac50d433b0f2cc353a25ec5a5bf687420d50 100644 (file)
--- a/README.md
+++ b/README.md
@@ -8,14 +8,14 @@ that day.
 
 ## Building
 
-To build a specific file, just `go build` it. The resulting executable expects
-to take input from a file named `input.txt` located in the same directory as
-you're running the executable in. To specify whether you'd like to process that
-input according to the first or second part of that day, you have to pass either
-a `1` or a `2` on the command line. Additionally, since each day comes with an
-example input used for testing, you can optionally pass `test` at the end of the
-command line to take input from `test.txt` instead, which is where I would paste
-the test input copied directly from the webpage.
+To build any file, just use the `go build` command. The program reads its input
+from a file named `input.txt` located in the same directory that you're running
+the program in. To specify whether you'd like to process the input according to
+the first or second part of that day's challenge, you can either pass a `1` or a
+`2` as a command line argument. Each challenge comes with additional smaller
+input used for basic testing that can be copied to a file named `test.txt`.
+Passing `test` as a command line argument will have the program read input from
+`test.txt` instead.
 
 If you find this code at all useful, I've included a template, `template.go`,
 that can be used for any other Advent of Code challenges.