fix: update dependencies (watson-developer-cloud#168)

fix: Add image

fix: Update npmignore

Merge pull request watson-developer-cloud#153 from watson-developer-c…

…loud/media-stream

fix: Update camelCase parameter and fix bug in TTS

feat: update parameter names in recognize/synthesize streams to… (wat…

…son-developer-cloud#151)

feat: update parameter names in recognize/synthesize streams to be lower camel case

fix: remove gh-pages from npm

fix: Update doc url

fix: Use node 10 (watson-developer-cloud#142)

fix: Use node 10

perf: move wdc dependency to devDependencies for smaller package… (wa…

…tson-developer-cloud#133)

perf: move wdc dependency to devDependencies for smaller package size

Merge pull request watson-developer-cloud#132 from watson-developer-c…

…loud/trigger-release

fix: update vulnerable dependencies