Updating the version of browser sync

This will enable the TLS functionality
Adds 'https:true' to both serve task

This should fully enable HTTPS server testing.
Removes https by default and provides some guidance for the developer about how to enable it
Merge pull request #290 from google/https-browserSync

Adding HTTPS source via an updated browser sync
remove duplicated line-height
Merge pull request #306 from rdorde/dup-css-prop

Remove duplicated line-height in .logo
SASS now compiles on serve
remove unnecessary empty line.
Merge pull request #313 from appleboy/patch-1

remove unnecessary empty line.
Merge pull request #310 from webmakersteve/master

Compile SASS on Gulp serve task
Update gulp-ruby-sass to 0.7.1

Necessary for updated styles task.
Reduce to a single S/CSS task and watcher

- Outputs all Sass / CSS to .tmp
- Only compiles Sass files in the folder root Sass directory and those named
  specifically. In order for `changed` to work, users should only add files that
  have output files to their styles task, and let gulp-ruby-sass figure out the
  dependencies.w
Adding material design color palette variables to sass
Adding output css file
Merge pull request #314 from robwierzbowski/rw/single-sass-task

Bump gulp-ruby-sass to 0.7.1, reduce to single Sass task
bump deps
update to new useref API
minify images
Fixes #286 - fix navigation flash during resize.
remove deprecated .jshintrc props - fixes #329