introduce a way to set a default path for the exec used by this module.

This addresses #2, #3, #11, #21 & #22 without being intrusive about a
global path for exec.
linting
one shall not mute puppet values, they are immutable
documenting the new feature
txt linting
release 0.0.2
release v0.0.3
Update to accept all BSD kernels.  Add spec tests.
Merge pull request #24 from decibelhertz/master

Update to accept all BSD kernels.  Add spec tests.
add travis-ci
add status
version 0.0.4
Optimization of runtime with many sysctl options + some other minor fixes

 - New native provider sysctl_runtime which is responsible for setting sysctl options in the runtime.
 - Full reload of sysctl(Linux sysctl -p) isn't needed anymore, as sysctl_runtime will always set the right values.
 - Because of missing sysctl reload, no OS check(BSD vs Linux) is needed anymore, as sysctl value setting is everywhere the same: sysctl key=value
 - Auto discovery of sysctl binary in /sbin, /bin, /usr/bin, /usr/sbin by provider
 - Allow to use other target file then the default /etc/sysctl.conf
allow to build it on ruby 1.8.7
allow to build it on ruby 1.8.7
OpenBSD 5.6 may not have a /etc/sysctl.conf by default, therefore
make sure it exists, by creating it, if it doesn't, before attempting
to set sysctl variables.

move the file resource for sysctl.conf to the sysctl::params class.
Fixed the sysctl in case of stderr errors

In case of errors and combine of stderr&stdout output of sysctl
the output gets broken and can't be parsed:

kernel.shmmni = 4096
kernel.shmerror: permission denied on key 'vm.compact_memory'
_rmid_forced = 0
kernel.msgmax = 8192
--
net.ipv4.route.gc_min_interval = 0
net.iperror: permission denied on key 'net.ipv4.route.flush'
v4.route.gc_min_interval_ms = 500
--
net.ipv6.conf.default.max_desync_factor = 600
net.ipv6.conf.default.max_addresses =error: permission denied on key 'net.ipv6.route.flush'
 16
net.ipv6.conf.default.accept_ra_defrtr = 1
Merge pull request #28 from buzzdeee/master

create /etc/sysctl.conf if it doesn't yet exist
Merge branch 'exec_optimization' of https://github.com/artem-sidorenko/puppet-sysctl into artem-sidorenko-exec_optimization

Conflicts:
	manifests/params.pp
	manifests/value.pp
cleanup runtime provider

There is no need to implement which lookups on our own in every provider.

Commands defined using the commands API are automatically looked up
using puppet's Puppet::Util.which helper. Which is also what we should
use for our alternative parsing lookup.