Some formatting on markdown
Update resources links
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Fixed #29
Added support for libmemcached 0.44 and up. Testing for now
Add the version available in gentoo
Added test for issue #16
Add better test output
Test error message
This version comparison was wrong
Skip for older libmemcached
Link to the relevant issue, fixed in memcached 1.4.14
Added a warning regarding binary proto and touch
Also test libmemcached 1.0.15
Actually needs to be 1.0.16
Skip gh_77 test for older libmemcached
Fixed AC_TRY_COMPILE tests on CentOS
More granular session locking support

Adding memcached.sess_lock_max_wait, which sets how long
a incoming lock request will wait for the lock before
dying.

And memcached.sess_lock_expire, which sets how long until
the lock expires, independent of the current
max_execution_time.
Added test for #90
Merge pull request #91 from merrill-oakland/sessionlocks

More granular session locking support