Bump version to 0.1.0
Add LICENSE file
Modify way to check existence of `setTimeout` function for old IEs

For example, `typeof setTimeout` is not "function" but "object"
in IE 8.
Modify process for defining `queueTaskToEventLoop` function for old IEs
Promises/A+ doesn't seem a part of CommonJS
Put promises-A+ logo on first line of README
Add link to project site to README
Merge: changes for version 0.1.0