diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a65b417
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+lib
diff --git a/procio.cr b/procio.cr
index 6473a44..54ce48b 100644
--- a/procio.cr
+++ b/procio.cr
@@ -17,6 +17,7 @@ Dir.entries(dir).each do |entry|
       end
     end
   rescue File::NotFoundError
+    # process might already have exited
   end
 end
 
diff --git a/shard.lock b/shard.lock
new file mode 100644
index 0000000..4f3e149
--- /dev/null
+++ b/shard.lock
@@ -0,0 +1,2 @@
+version: 2.0
+shards: {}
diff --git a/shard.yml b/shard.yml
new file mode 100644
index 0000000..2a5ba4a
--- /dev/null
+++ b/shard.yml
@@ -0,0 +1,3 @@
+name: procio
+version: 0.1.0
+license: MIT