Fixed: bad english
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e69de29..8402bab 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -0,0 +1 @@
+Send pull requests against DEV branch
diff --git a/README.md b/README.md
index ff4cd0a..32d5eb8 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
## Description
-The purpose of this project is to use off the shelf commerical 3d cameras in determining a box's dimensions quickly and within a reasonable amount of accuracy. The initial use cases revolve around warehouse operations.
+The purpose of this project is to use off the shelf commercial 3d cameras in determining a box's dimensions quickly and within a reasonable amount of accuracy. The initial use cases revolve around warehouse operations.
### Use Cases include
* Obtaining accurate shipping dimensions of parcels