Add more info to Getting Started Guide
Add more info to Getting Started Guide

Changes: I've added information to the tutorial that would help me avoid the problems I had following it.

Context: I spent several hours getting the tutorial to work, solving one problem after another, and these hints would have helped me a lot.
coreos/rkt,kinvolk/rkt,linki/rkt,jakon89/rkt,shobhit85/rkt,tmrts/rkt,jzelinskie/rkt,endocode/rkt,squeed/rkt,joshix/rkt,cab105/rkt,liugenping/rkt,matthaias/rkt,jakon89/rkt,achanda/rkt,tmrts/rkt,matthaias/rkt,lucasallan/rkt,jjlakis/rkt,lucasallan/rkt,monstermunchkin/rkt,sinfomicien/rkt,jasonchaffee/rkt,coreos/rkt,mike1729/rkt,jzelinskie/rkt,euank/rkt,il9ue/rkt,Shashwatsh/rkt,intelsdi-x/rkt,sinfomicien/rkt,jjlakis/rkt,markllama/rkt,rkt/rkt,blixtra/rkt,markllama/rkt,Wilybald/rkt,dgonyeo/rkt,blixtra/rkt,dgonyeo/rkt,ybubnov/rkt,alban/rkt,jjlakis/rkt,nhlfr/rkt,squeed/rkt,shobhit85/rkt,intelsdi-x/rkt,ybubnov/rkt,nhlfr/rkt,cab105/rkt,liugenping/rkt,jzelinskie/rkt,squeed/rkt,lucasallan/rkt,coreos/rkt,yifan-gu/rocket,markllama/rkt,Wilybald/rkt,alban/rkt,mike1729/rkt,linki/rkt,achanda/rkt,rkt/rkt,sinfomicien/rkt,jakon89/rkt,sgotti/rkt,monstermunchkin/rkt,nhlfr/rkt,sstabellini/rkt,intelsdi-x/rkt,joshix/rkt,Wilybald/rkt,matthaias/rkt,jasonchaffee/rkt,ybubnov/rkt,rkt/rkt,yifan-gu/rkt,linki/rkt,krnowak/rkt,monstermunchkin/rkt,il9ue/rkt,euank/rkt,s-urbaniak/rkt,rkt/rkt,Shashwatsh/rkt,lucasallan/rkt,tmrts/rkt,adfernandes/rkt,jonboulle/rkt,joshix/rkt,jonboulle/rkt,akshaykarle/rkt,kinvolk/rkt,kbrwn/rkt,achanda/rkt,yifan-gu/rkt,yifan-gu/rkt,shobhit85/rkt,adfernandes/rkt,dgonyeo/rkt,mike1729/rkt,blixtra/rkt,Shashwatsh/rkt,jasonchaffee/rkt,kbrwn/rkt,krnowak/rkt,kinvolk/rkt,jonboulle/rkt,endocode/rkt,akshaykarle/rkt,endocode/rkt,yifan-gu/rocket,cab105/rkt,joshix/rkt,sgotti/rkt,liugenping/rkt,euank/rkt,s-urbaniak/rkt,akshaykarle/rkt,kinvolk/rkt,kbrwn/rkt,sstabellini/rkt,adfernandes/rkt,yifan-gu/rocket,krnowak/rkt,s-urbaniak/rkt,sstabellini/rkt,alban/rkt,sgotti/rkt,Wilybald/rkt,il9ue/rkt