Fixed a broken markdown link

Fixed the link to caption formatting techniques.
313 Save all video tag attributes while moving media element in DOM
315 Fullscreen button CSS rules for webkit and Firefox added
Changed V to vjs
Changed 'createElement' method to 'createEl'
Adds (removes) 'vjs-fullscreen' class on fullscreenchange event fixes #315
Fix poster component visibility
Fix volume handler initial position
Added code to replace Windows-style backslashes with Unix-style
forward-slashes

testing:
grunt successful
grunt test successful
removed extraneous whitespace from Gruntfile

testing:
grunt and grunt test both successful
Merge pull request #328 from BCjwhisenant/gruntfile-fix

Added code to replace Windows-style backslashes with Unix-style
Merge pull request #321 from Sundrique/volume-handler-fix

Fix volume handler initial position
Merge pull request #320 from Sundrique/poster-visibility-fix

Fix poster component visibility
Merge pull request #316 from Sundrique/315-fullscreen-icon

315 Fullscreen button CSS rules for webkit and Firefox added
Merge pull request #314 from Sundrique/313-attributes

313 Save all video tag attributes while moving media element in DOM
Merge pull request #297 from ptrin/patch-1

Fixed a broken markdown link
resolved conflicts with upstream master
Provide more information to screen reader users about the duration time