Fix unit testing error message

add Remixd

Compile if solidity is fixed version, fixes #1011

Link to example project using remix-test with CI

Link to example project that uses Travis + Remix-tests

Delete .travis.yml

Update README.md

Update README.md

Set the msg.sender in the solidity userdoc

publishing

Fix importing Solidity File

run publish and create tag

update lerna / add gulp

update tutorial with new link for PDF

add "addProvider" "removeProvider" to execution context