add prebuild and test on all abi versions

Nan 2.0 iojs 3.0 changes

this commit does not compile and only includes changes for leveldown
updates to nan

iterator.js
src/iterator.cc
(README.md excluded)

iterator.js
src/iterator.cc
src/iterator.h
test/iterator-test.js
(README.md excluded)

clean up old dependencies

docs on liveBackup

update leveldb.gyp for mac

skip - in name to please node 0.10

merge in updated abstract-leveldown from upstream

update abstract-leveldown

make it work

update .travis.yml (nvm works on travis now)

pass db to abstractIterator so gc keeps it

update nan for iojs 2.0.0

tap -> tape + faucet

unbreak benchmarks

Revert "run node-gyp in the postinstall phase"

This reverts commit 71f4e6b0809d7be5a81135ee51c6ba5931c87353.

s/rvagg\/node-/level\//

N on travis

if `preinstall` script is not set, then `npm` will default
that to `node-gyp rebuild` *if* there...

abstract-leveldown ~2.1.0

update logo and copyright

nan 1.5 for io.js support

Fix LevelDB builds for modern gcc versions

LevelDB fails to compile with the current compiler flags on a Debian box running gcc 4.7.1 due t...

Conflicts:
package.json

Fix building with clang on linux (take 2)

- this is needed in order to build with clang on Linux

fixes #124