NATS module init

LICENSE

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+MIT License
+
+Copyright (c) 2018 Evgeniy Kulikov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# NATS Module for Helium
+
+Module provides you with the following things:
+- [`*nats.Conn`](https://godoc.org/github.com/nats-io/go-nats#Conn) represents a bare connection to a nats-server. It can send and receive []byte payloads
+- [`stan.Conn`](https://godoc.org/github.com/nats-io/go-nats-streaming#Conn) represents a connection to the NATS Streaming subsystem. It can Publish and Subscribe to messages within the NATS Streaming cluster.
+
+Configuration:
+- yaml example
+```yaml
+nats:
+  url: nats://<host>:<port>
+  cluster_id: string
+  client_id: string
+  servers: [...server slice...]
+  no_randomize: bool
+  name: string
+  verbose: bool
+  pedantic: bool
+  secure: bool
+  allow_reconnect: bool
+  max_reconnect: int
+  reconnect_wait: duration
+  timeout: duration
+  flusher_timeout: duration
+  ping_interval: duration
+  max_pings_out: int
+  reconnect_buf_size: int
+  sub_chan_len: int
+  user: string
+  password: string
+  token: string
+```
+- env example
+```
+NATS_URL=nats://<host>:<port>
+NATS_CLUSTER_ID=string
+NATS_CLIENT_ID=string
+NATS_SERVERS=[...server slice...]
+NATS_NO_RANDOMIZE=bool
+NATS_NAME=string
+NATS_VERBOSE=bool
+NATS_PEDANTIC=bool
+NATS_SECURE=bool
+NATS_ALLOW_RECONNECT=bool
+NATS_MAX_RECONNECT=int
+NATS_RECONNECT_WAIT=duration
+NATS_TIMEOUT=duration
+NATS_FLUSHER_TIMEOUT=duration
+NATS_PING_INTERVAL=duration
+NATS_MAX_PINGS_OUT=int
+NATS_RECONNECT_BUF_SIZE=int
+NATS_SUB_CHAN_LEN=int
+NATS_USER=string
+NATS_PASSWORD=string
+NATS_TOKEN=string
+```

go.mod

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+module github.com/go-helium/nats
+
+require (
+	github.com/im-kulikov/helium v0.9.2
+	github.com/nats-io/go-nats v1.7.2
+	github.com/nats-io/go-nats-streaming v0.4.0
+	github.com/nats-io/nats-streaming-server v0.11.2
+	github.com/pkg/errors v0.8.1
+	github.com/smartystreets/goconvey v0.0.0-20190222223459-a17d461953aa
+	github.com/spf13/viper v1.3.1
+	go.etcd.io/bbolt v1.3.2 // indirect
+)