Add snapcraft config and link to snap package in README

README.md

@@ -11,6 +11,8 @@ Status](https://travis-ci.org/awslabs/aws-sam-cli.svg?branch=develop)
 ![GitHub-release](https://img.shields.io/github/release/awslabs/aws-sam-cli.svg)
 ![PyPI version](https://badge.fury.io/py/aws-sam-cli.svg)
 
+[![Get it from the Snap Store](https://snapcraft.io/static/images/badges/en/snap-store-black.svg)](https://snapcraft.io/aws-sam-cli)
+
 [Join the SAM developers channel (\#samdev) on
 Slack](https://join.slack.com/t/awsdevelopers/shared_invite/enQtMzg3NTc5OTM2MzcxLTdjYTdhYWE3OTQyYTU4Njk1ZWY4Y2ZjYjBhMTUxNGYzNDg5MWQ1ZTc5MTRlOGY0OTI4NTdlZTMwNmI5YTgwOGM/)
 to collaborate with fellow community members and the AWS SAM team.

snap/local/launchers/launcher.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+
+HOME="$(getent passwd "${USER}" | cut -d: -f6)"
+
+exec "${@}"

snap/snapcraft.yaml

@@ -0,0 +1,50 @@
+name: aws-sam-cli
+version: git
+summary: The AWS SAM CLI tool for the AWS Serverless Application Model
+description: >
+  `sam` is the AWS CLI tool for managing Serverless applications written
+  with the AWS Serverless Application Model (SAM).
+  SAM CLI can be used to test functions locally, start a local API Gateway
+  from a SAM template, validate a SAM template, fetch logs, generate sample
+  payloads for various event sources, and generate a SAM project in your
+  favorite Lambda Runtime.
+
+license: Apache-2.0
+
+base: core18
+
+grade: stable
+confinement: strict
+
+plugs:
+  personal-files:
+    read:
+      - $HOME/.aws
+
+parts:
+  launchers:
+    plugin: dump
+    source: snap/local/launchers
+    organize:
+      "*": bin/
+
+  aws-sam-cli:
+    plugin: python
+    python-version: python3
+    python-packages:
+      - awscli
+    requirements:
+      - requirements/base.txt
+    source: .
+
+apps:
+  aws-sam-cli:
+    adapter: full
+    command-chain:
+      - bin/launcher.sh
+    command: bin/sam
+    #plugs:
+    #  - home
+    environment:
+      LC_ALL: C.UTF-8
+      LANG: C.UTF-8