Without 2 spaces at the end of each metadata tag in the README.md files, the data renders as one long string, which is hard to read. For example:

Author: Pete Muir Level: Beginner Technologies: CDI, JSF Summary: Demonstrates the use of CDI 1.0 and JSF 2.0 Target Product: EAP
Product Versions: EAP 6.1, EAP 6.2 Source: <https://github.com/jboss-developer/jboss-eap-quickstarts/>

Adding the 2 spaces to the end of each line forces a line break for the next tag, for example:

Author: Pete Muir
Level: Beginner
Technologies: CDI, JSF
Summary: Demonstrates the use of CDI 1.0 and JSF 2.0
Target Product: EAP
Product Versions: EAP 6.1, EAP 6.2
Source: <https://github.com/jboss-developer/jboss-eap-quickstarts/>

See this original bug report from QA:
https://bugzilla.redhat.com/show_bug.cgi?id=1028448