Set base url in bootstrap script by default.

README.md

@@ -6,7 +6,7 @@ Experimental native layer for the [Atom](https://github.com/github/atom).
 
 ### One-time setup
 
-    $ script/bootstrap https://gh-contractor-zcbenz.s3.amazonaws.com/libchromiumcontent
+    $ script/bootstrap
 
 ### Building
 

script/bootstrap

@@ -11,8 +11,7 @@ usage() {
 BASE_URL="${1}"
 
 if [ -z "${BASE_URL}" ]; then
-  usage
-  exit 1
+  BASE_URL="https://gh-contractor-zcbenz.s3.amazonaws.com/libchromiumcontent"
 fi
 
 cd "$(dirname "$0")/.."