Added tip to document code to CONTRIBUTE.
Added tip to document code to CONTRIBUTE.

bmun/huxley,ctmunwebmaster/huxley,nathanielparke/huxley,bmun/huxley,nathanielparke/huxley,ctmunwebmaster/huxley,bmun/huxley,ctmunwebmaster/huxley,bmun/huxley,ctmunwebmaster/huxley,nathanielparke/huxley,nathanielparke/huxley