Add troubleshooting section.

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient-android/trunk@1578385 13f79535-47bb-0310-9956-ffa450edef68
SDK version 17 should suffice

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient-android/trunk@1578416 13f79535-47bb-0310-9956-ffa450edef68
Update troubleshooting section.

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient-android/trunk@1578445 13f79535-47bb-0310-9956-ffa450edef68
Update troubleshooting section.

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient-android/trunk@1578472 13f79535-47bb-0310-9956-ffa450edef68
Reverted minimal SDK requirement to rev. 17

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient-android/trunk@1578509 13f79535-47bb-0310-9956-ffa450edef68
Added doc title and copyright notice to javadocs

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient-android/trunk@1579245 13f79535-47bb-0310-9956-ffa450edef68