Make sure being offline won't block development workflow.

Adding a flag to ignore exit status to the git pull command.
Only those witch already checked out in the past will benefit from this, since git clone will still block the build.

Author: irae

Makefile

@@ -43,8 +43,10 @@ init:
 	@@echo "Grabbing external dependencies..."
 	@@if test ! -d test/qunit/.git; then git clone git://github.com/jquery/qunit.git test/qunit; fi
 	@@if test ! -d src/sizzle/.git; then git clone git://github.com/jeresig/sizzle.git src/sizzle; fi
-	@@cd src/sizzle && git pull origin master > /dev/null 2>&1
-	@@cd test/qunit && git pull origin master > /dev/null 2>&1
+	@@cd src/sizzle
+	- @@git pull origin master > /dev/null 2>&1
+	@@cd test/qunit
+	- @@git pull origin master > /dev/null 2>&1
 
 jquery: ${DIST_DIR} selector ${JQ}
 jq: ${DIST_DIR} ${JQ}