New parameter '$install_dev' to install development headers.

- Works for Debian and RedHat
- Added new parameter to READEME.md
Merge pull request #19 from tPl0ch/feature/dev-libs

New parameter '$install_dev' to install development headers.
Version 2.1.0
Implement Override  the  default size of each slab page
Merge pull request #20 from zylon-internet/master

Implement Override the default size of each slab page
Fix Puppet 3.2.x deprecation warnings
Merge pull request #23 from blkperl/fix_dep_warnings

Fix Puppet 3.2.x deprecation warnings
use double quotes instead of single quotes
Merge branch 'master' of github.com:saz/puppet-memcached
add newer puppet versions to travis file
switch gem source
remove puppet version 3.2.0
ignore ghpublisher directory
update module version
service has status command on some platforms
use braces around variables
add ghpublisher to travis file
fix travis file
new module version
ensure service is stopped, if package_ensure is set to absent