Don't commit man pages

Don't commit man pages, since that bloats commits.

Attempt to build them in `bin/package`. This is fraught, since we need
`help2man`. Hopefully this works!

type: development

.gitignore

@@ -9,6 +9,7 @@
 /book/src/references
 /book/src/references.md
 /completions
+/man
 /target
 /wiki
 /www/book

CHANGELOG.md

@@ -4,7 +4,8 @@ Changelog
 
 UNRELEASED - 2020-04-21
 -----------------------
-- :wrench: [`xxxxxxxxxxxx`](https://github.com/casey/intermodal/commits/master) Don't commit the book - _Casey Rodarmor <casey@rodarmor.com>_
+- :wrench: [`xxxxxxxxxxxx`](https://github.com/casey/intermodal/commits/master) Don't commit man pages - _Casey Rodarmor <casey@rodarmor.com>_
+- :wrench: [`4d67d3a10d17`](https://github.com/casey/intermodal/commit/4d67d3a10d17db3c63af092a936eb5994ee107b1) Don't commit the book - _Casey Rodarmor <casey@rodarmor.com>_
 - :wrench: [`28114c3d64dd`](https://github.com/casey/intermodal/commit/28114c3d64dde5e0275c936b0019eaf4760ba559) Don't commit shell completion scripts - _Casey Rodarmor <casey@rodarmor.com>_
 - :art: [`4f4464e3a2a7`](https://github.com/casey/intermodal/commit/4f4464e3a2a7f4aaffea8dbe38dd110ad9be4393) Get `st_flags` from `MetadataExt` on MacOS - _Casey Rodarmor <casey@rodarmor.com>_
 - :sparkles: [`deca555ac3b3`](https://github.com/casey/intermodal/commit/deca555ac3b3b8f665ee6415f80e05b2bb5e4af7) Allow suppressing output with `--quiet` - Fixes [#174](https://github.com/casey/intermodal/issues/174) - _Celeo <celeodor@gmail.com>_

bin/package

@@ -15,9 +15,17 @@ test -f Cargo.lock || cargo generate-lockfile
 
 echo "Building $bin..."
 
-if [ "$os" = "ubuntu-latest" ]; then
-  sudo apt-get install musl-tools
-fi
+case $os in
+  ubuntu-latest)
+    sudo apt-get help2man install musl-tools
+    ;;
+  macos-latest)
+    brew install help2man
+    ;;
+  windows-latest)
+    choco install gnuwin
+    ;;
+esac
 
 case $os in
   ubuntu-latest | macos-latest)
@@ -35,6 +43,11 @@ rm -rf completions
 mkdir completions
 $executable completions --dir completions
 
+echo "Building man pages..."
+rm -rf man
+mkdir man
+cargo run --package gen man
+
 echo "Copying release files..."
 mkdir dist
 cp -r \