Enrich memory variables: allow percents & add lock flag

Calculate max memory value in standalone place

* Fix memorysize fact issue (when it's not "nnn MB")
* Allow false, which is converted to 95%
* Reuse value in redhat`s config
* Allow percents of available memory
* Which allows us improved config for RedHat family

Little things

* Update documentation: add example with memory
* Add metadata.json to igonore -- eclipse loves to create one
Merge pull request #14 from garex/4ed4d894596425b6bff19284d9483f2655c1b69f

Enrich memory variables: allow percents & add lock flag
refactor max memory calculation, fix spec tests
add spec test for max_memory in percent
Use puppetlabs_spec_helper in spec tests
add puppetlabs/stdlib as dependency to Modulefile
use stdlib to_bytes function
remove trailing comma
load only to_bytes function
add travis.yml file
Add travis-ci build status to readme
remove puppet version 2.6.9 from travis.yml
add some more puppet versions to travis.yml
remove usage of to_bytes function from puppetlabs-stdlib
Loading memcached_max_memory before usage

Needed for puppet 2.6.x backwards compat
Merge pull request #16 from derekhiggins/master

Backwards compatibility fix
remove unused dependency puppetlabs/stdlib
Load memcached_max_memory before use
Version 2.0.3
remove trailing close angle