LRDOCS-1352 created java task to check markdown files for proper single # header.
LRDOCS-1352 Rebuilt jar files and added ant target for checkheaders.
Merge branch 'antHeader' of https://github.com/mwilliams2014/liferay-docs into pr-213-antHeader

Conflicts:
	lib/liferay-doc-utils.jar
LRDOCS-1352 No need for taskdef since calling via java task and no need for release.properties.
LRDOCS-1352 Put task in alphabetical order
LRDOCS-1352 No need to extend Task since only the main() is needed. Updated illegal arg message. Removed informational output as it is not guaranteed to print at the start of the run ... sometimes it prints after the exception.
LRDOCS-1352 Format
LRDOCS-1352 Regenerate
Merge pull request #1014 from jhinkey/pr-213-antHeader

ant check-headers