update to latest workspace (#22)
update to latest workspace (#22)

- This updates the `workspace.json` to latest update to align with the other sample apps
rizwan29/default-toolchain-1489816140998,rizwan29/default-toolchain-1489816140998,vgaleano1/conversation-discovery-app,stevenpkg/conversation-with-discovery,rizwan29/default-toolchain-1489816140998,vgaleano1/conversation-discovery-app,vgaleano1/conversation-discovery-app,quimzop/conversation-with-discovery,stevenpkg/conversation-with-discovery,muhammadali1233/simple-toolchain-20170516070803409,vgaleano1/conversation-discovery-app,quimzop/conversation-with-discovery,rizwan29/default-toolchain-1489816140998,quimzop/conversation-with-discovery,muhammadali1233/simple-toolchain-20170516070803409,muhammadali1233/simple-toolchain-20170516070803409,muhammadali1233/simple-toolchain-20170516070803409,stevenpkg/conversation-with-discovery,quimzop/conversation-with-discovery,stevenpkg/conversation-with-discovery