send errors by UDP to log server

Merge pull request #36 from renderforest/udp_log

send tag first

v2.1.2

• package: update request, jest and remove fixpack from devDependencies
• package-lock: update package-lock

v2.1.1

• doc: update API documentation examples.

v2.1.0

• flow: remove flow & related deps, scripts, and configuration files
• lint: update eslint rules
• travis: update travis configurations - add lint task & update node versions
• doc: separate documentation into different doc files
• env: add github template issue
• deps: update outdated dependencies & set exact versions.

v2.0.1

• env: prepare to publish on npm - update name key, remove the private key in package.json, and remove packache-lock.json.

v2.0.0

• lib: all functions get options Object instead of list of args.
• lib: add support for codeSnippet - wraps message in slack code snippet.
• deps: babel-eslint, eslint, eslint-plugin-flowtype, eslint-plugin-node, flow-bin, jest modules update
• script: set remove flow on build script instead of test
• env: remove .vscode settings and add the dir in .gitignore file

v1.1.1

• deps: add request module in dependencies (required by request-promise)

v1.0.3

• lib: Error instance support for notifyError() fn text arg in slack lib.

v1.0.2

• lib: update _payloadForSlack() of slack lib to stringify the text if its an object.
• lib: JSDoc minor update in slack lib to support both object & string for text arg.

v1.0.1

• API: rename slack to Slack in src/index.js, such that one can use as follows: require('notification-hooks').Slack