Added sample markdown to README.
Added sample markdown to README.

tkraak/remark,lucamaraschi/pressenter,kwangkim/remark,smikes/remark,jonathanpberger/design-testing-pairing,gnab/remark,jonathanpberger/design-testing-pairing,saadatqadri/remark,ghoshbinayak/nodeppt,bytezen/remark,reyhansofian/remark,jeromecc/rmll2015madagascar,kahultman/remark,doctoryes/remark,gnab/remark,smikes/remark,jonathanpberger/design-testing-aed,FabioBeneditto/remark,tilast/service-objects,xiaoking/remark,GerHobbelt/remark,imouren/remark,noname007/remark,tkraak/remark,kwangkim/remark,imouren/remark,emi80/remark,reyhansofian/remark,linkabi9/sdjs20150309directives,programath/remark,saadatqadri/remark,ghoshbinayak/nodeppt,bkeepers/remark,lucamaraschi/pressenter,JPry/remark,kahultman/remark,jonathanpberger/dark-design,jonathanpberger/points-estimation-velocity,shigemk2/remark,bkeepers/remark,mariojp/remark,jonathanpberger/design-testing-aed,tripu/remark,bytezen/remark,GerHobbelt/remark,0111001101111010/remark,jonathanpberger/mce-test,tilast/service-objects,linkabi9/sdjs20150309directives,jonathanpberger/points-estimation-velocity,JPry/remark,emi80/remark,jonathanpberger/design-testing,mariojp/remark,FabioBeneditto/remark,noname007/remark,jonathanpberger/dark-design,shigemk2/remark,programath/remark,doctoryes/remark,jeromecc/rmll2015madagascar,tripu/remark,xiaoking/remark