Brewfile: add some CTF tools

See https://github.com/ctfs/write-ups for more info.
Brewfile: add binutils and cifer
.osx: Disable transparency in the menu bar and elsewhere on Yosemite
.osx: Remove a few commands that no longer have any effect in Yosemite

Closes #436.
.osx: Use the system-native print preview dialog in Chrome

Closes #434.
.aliases: Update `npm` the right way

`npm install npm -g` is the new recommended way to update npm as specified in the npm-faq at https://github.com/npm/npm/blob/master/doc/misc/npm-faq.md.

Closes #423.
.osx: Don’t send Safari search queries to Apple
.osx: Make Yosemite Safari more useful
Use `brew.sh` instead of `Brewfile`

Also, remove `Caskfile` since I didn’t use it.

Closes #428.
.bash_profile: Support multiple hosts in SSH completion

Useful in cases such as:

```

Host vm1 vm2 vm3 vm4
     Host localhost
     # ...
```

Simply adding a `-` to `tr` fixes this.

Closes #437.
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  .bash_profile: Support multiple hosts in SSH completion
  Use `brew.sh` instead of `Brewfile`
  .osx: Make Yosemite Safari more useful
  .osx: Don’t send Safari search queries to Apple
  .aliases: Update `npm` the right way
  .osx: Use the system-native print preview dialog in Chrome
  .osx: Remove a few commands that no longer have any effect in Yosemite
  .osx: Disable transparency in the menu bar and elsewhere on Yosemite
  Brewfile: add binutils and cifer
  Brewfile: add some CTF tools

Conflicts:
	.osx
	Brewfile
	Caskfile