added stack support

.gitignore

@@ -11,3 +11,4 @@ includes
 *.agdai
 *.history
 Setup.hs
+.stack-work

README.md

@@ -63,6 +63,8 @@ Building
 To generate the build scripts provision a cabal sandbox with pandoc in it. This
 is done by the ``write-you-a-haskell.cabal`` file.
 
+**Cabal**
+
 ```bash
 $ cabal sandbox init
 $ cabal install --only-dependencies
@@ -70,6 +72,13 @@ $ cabal exec bash
 $ make
 ```
 
+**Stack**
+
+```bash
+$ stack exec bash
+$ make
+```
+
 To make the generate the pdf, the LaTeX packages must be installed on the
 system.
 

stack.yaml

@@ -0,0 +1,6 @@
+resolver: lts-2.22
+packages:
+- '.'
+extra-deps: []
+flags: {}
+extra-package-dbs: []