note when 1.0 branch was created
add note about third-party dependencies
updated README.md file
change implementation of meter bodies to workaround tiling problem, see concentration#2
 move BLLStrings.js to beers-law-lab-strings.js
added vibe & sherpa to phetlibs
convert to string.js plugin
Removed i18n plugin
Merge branch 'master' into 1.0