Merge pull request #1 from meltingwax/master

Created README.rst (based off of ubidots-python/README.rst), README_dev (for developers), ANT build file, .gitignore
Update README.rst: adding missing semicolon
Bugfix (new ApiClient(...))
Update README.rst
Fixing bug in build.xml
Bugfix. Was sending timestamp in seconds, now in millesconds (correct)
Merge pull request #1 from ubidots/master

Fixing timestamp bug, adding type declartion of java variables to examples