diff --git a/.gitignore b/.gitignore
index 5148e52..9fbc3fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,6 +11,10 @@ pids
 # Directory for instrumented libs generated by jscoverage/JSCover
 lib-cov
 
+# Builds
+build/
+lib/
+
 # Coverage directory used by tools like istanbul
 coverage
 
diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..4dce379
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1,2 @@
+test
+docs