Add `readFile` method.

package.yaml

@@ -1,5 +1,5 @@
 name:                postlude
-version:             0.1.0.7
+version:             0.1.0.8
 github:              "jrpotter/postlude"
 license:             BSD3
 author:              "Joshua Potter"

postlude.cabal

@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 4231db66264da515e63b41798404730d0e322888a9b8d3e68a88879c1cbee1f6
+-- hash: e6be0a4dec61b87fd1c331665965c41d6bae77fdbb44694de33350e772616127
 
 name:           postlude
-version:        0.1.0.6
+version:        0.1.0.7
 description:    Please see the README on Github at <https://github.com/jrpotter/postlude#readme>
 homepage:       https://github.com/jrpotter/postlude#readme
 bug-reports:    https://github.com/jrpotter/postlude/issues

src/Postlude.hs

@@ -336,6 +336,7 @@ import System.IO as X
   ,   IOMode(WriteMode)
   , openFile
   , print
+  , readFile
   , stderr
   , stdin
   , stdout