diff --git a/README.md b/README.md
index 055cc4c..d52e982 100644
--- a/README.md
+++ b/README.md
@@ -44,6 +44,31 @@ To install all pending updates run `mas upgrade`.
     ==> Downloading iFlicks
     ==> Installed iFlicks    
 
+## Build from source
+
+`mas` currently requires the [bundler](http://bundler.io/) RubyGem in order to 
+bootstrap and build the project. There are a number ways to install bundler but
+if you have never used it before then installing it with `gem` should be enough.
+
+```
+$ gem install bundler
+```
+
+You can now bootstrap the project by executing the `bootstrap` script
+from the mas sources script directory:
+
+```
+$ script/bootstrap
+```
+
+You can now build from Xcode by opening `mas-cli.xcodeproj`, or from the Terminal:
+
+```
+$ script/build
+```
+
+Build output can be found in the `build/` directory within the project.
+
 ## License
 
 Code is under the MIT license.
diff --git a/mas-cli.xcodeproj/project.pbxproj b/mas-cli.xcodeproj/project.pbxproj
index 6b40171..20d9f17 100644
--- a/mas-cli.xcodeproj/project.pbxproj
+++ b/mas-cli.xcodeproj/project.pbxproj
@@ -426,6 +426,7 @@
 		ED031A811B5127C00097692E /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				CONFIGURATION_BUILD_DIR = "$(PROJECT_DIR)/build";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(SYSTEM_LIBRARY_DIR)/PrivateFrameworks",
diff --git a/script/build b/script/build
index 24725d1..2e6cac9 100755
--- a/script/build
+++ b/script/build
@@ -4,14 +4,14 @@ main() {
   script/clean
   build
 
-  # If this is a tagged build we are going to relase
+  # If this is a tagged build we are going to release
   if [[ ! -z $TRAVIS_TAG ]]; then
     archive
   fi
 }
 
 build() {
-  xcodebuild -project "mas-cli.xcodeproj" -scheme mas-cli clean build | xcpretty -c
+  xcodebuild -project "mas-cli.xcodeproj" -scheme mas-cli -configuration Release clean build | xcpretty -c
 }
 
 archive() {