[RTI-2586] Prepare for publishing @ hex.pm (#37)

* Migrate from Makefile to rebar3

* [RTI-2584] Fix travis.yml

* [RTI-2584] The project is not ready for OTP21 yet

* [RTI-2807] Make sure the project is dialyzable

* [RTI-2808] Remove export_all

* [RTI-2806] Add linting with elvis

* [RTI-2806] Address @miriampena's comment

* [RTI-2586] Add relevant hex.pm data

Author: elbrujohalcon

rebar.config

@@ -48,5 +48,6 @@
 ]}.
 
 {plugins, [
-    {rebar3_lint, "0.1.10"}
+    {rebar3_lint, "0.1.10"},
+    rebar3_hex
 ]}.

src/mero.app.src

@@ -1,8 +1,8 @@
 %%-*- mode: erlang -*-
 {application, mero,
  [
-  {description, "mero"},
-  {vsn, "1.0.0"},
+  {description, "Scalable and lightweight OTP Erlang client for memcached"},
+  {vsn, "1.1.0"},
   {modules, []},
   {registered, []},
   {applications, [
@@ -13,6 +13,10 @@
                   dynamic_compile
                  ]},
   {mod, {mero, []}},
+  {maintainers, ["adroll-rtb"]},
+  {licenses, ["BSD-3-Clause"]},
+  {links, [{"Github", "https://github.com/AdRoll/mero"}]},
+  {build_tools, ["rebar3"]},
   {env, [
       {cluster_config,
           [{default,