post usability textual changes
fixed learn to map title and changed homepage text
changed why map page title
change commonly asked question order
removed arrows from homepage
removed arrow images from _assets
removed extra padding from >768px infographics
force html5 youtube player, which is more accessible, for supported browsers
text changes, centered h1 on home, changed more.jpg
added top margin to homepage hook
changed how-to video embeds, HOT abbreviation, and transcripts
changed how-to video embeds, HOT abbreviation, and transcripts
deleted old transcript
Merge branch 'video-updates'
updated video links because of spelling mistake
added link to @mapgive for twitter verification
added link to @mapgive for twitter verification
Minor updates.  Added two tasks.
changed links to hide full url
updated step 2 instructions