add readFloat and readBoolean, close #9
ditch Buffer browserify polyfill

now we fall back to Uint8Array explicitly
add a lightweight Buffer shim for browsers
switch to the new Buffer shim
use HTML5 text encoder/decoder if available
add scripts for browser builds
saner Buffer polyfill (wrap, not augment)
add writeUInt64 and writeTaggedUInt64
buffer shim fixes and full tests
Merge pull request #10 from mapbox/less-node

[in progress] Ditch browserify Buffer polyfill