Merge pull request #1 from ir4y/master

Fix typo in Tscope.attr
Merge pull request #2 from ir4y/traversed

Traverse support
Fix identation
Fix code style
Add traversal to documentation
Shallow copy in attr() lenses
Merge pull request #3 from Suor/master

Shallow copy in attr() lenses
Remove obsolete makeAll function
Added cursors
Documented cursors
Fixed this scope in React.js example
Fixed React.js example
Merge pull request #4 from Suor/master

Added cursors
Distribute Telescope for browsers
Don't test on node.js 0.8
Fix `mod` function