'Command not found' when trying to install Grunt

I'm having this issue when I try to install Grunt, I'm getting:

$ npm install -g grunt-cli
-bash: npm: command not found

I use Homebrew for intallations and as you can see on the list node is there:

$ node -v
v0.10.29
$ which node
/usr/local/bin/node
$ brew list
autoconf    jpeg        mhash       php55-mcrypt    zlib
fontconfig  libpng      mysql       pkg-config
freetype    libtiff     node        rbenv
gd          libtool     openssl     ruby-build
gettext     mcrypt      php55       unixodbc

This is the error I get after installing node(no idea what it mean):

..........

npm ERR! Additional logging details can be found in:
npm ERR!     /usr/local/lib/node_modules/npm/npm-debug.log
npm ERR! not ok code 0
make[1]: *** [node_modules/.bin/ronn] Error 3
make: *** [man/man3/npm-bin.3] Error 2

..........

==> Summary /usr/local/Cellar/node/0.10.29: 1547 files, 18M

Not sure but I think my problem is the PATH which I've been trying to fix with no success. This is my .bash_profile:

export PATH="~/.rbenv/shims:$(brew --prefix josegonzalez/php/php55)/bin:/usr/local/bin:$PATH"

eval "$(rbenv init -)"

I'm confused! Any help here? Thanks.