Fixes #1114, Adds upper and lower as filters for the template engine.
Fixes #1092, Adds a format option to the {{isotime}} variable.

Now using the golang magic date: Mon Jan 2 15:04:05 -0700 MST 2006
One can format the time like:

    {{isotime "2006-01-02"}} == "YYYY-MM-DD"
    {{isotime "060102-15"}}  == "YYMMDD-HH" (24-hour clock)
    {{isotime "060102-3"}}   == "YYMMDD-H"  (12-hour clock)

Using {{isotime}} as a standalone variable doesn't change. It still returns RFC3339 formatted time.
virtualbox: use local VBoxGuestAdditions.iso by default

fixes #1123
updated docs
Add null builder reference to Docs
Correct example to use ssh_username/ssh_password
Merge pull request #1133 from stonith/master

website: Null Builder docs were missed
Update docs.erb
builder/vmware-vmx: add floppy_files support

fixes #1057
Merge pull request #1136 from rasa/1057-add-floppy-files-to-vmware-vmx

builder/vmware-vmx: add floppy_files support
Update platforms.html.markdown

Added Parallels
common: add test for empty val
Merge pull request #1132 from rasa/1123-use-local-vboxguestadditions-iso

virtualbox: use local VBoxGuestAdditions.iso by default
Update CHANGELOG
Adds documentation to the website. Explains how to format the time.
Force LANG=C before appending rest of environment, as only first occurence is used
Merge pull request #1145 from jsoriano/fix-env-order-lang-c

Force LANG=C before appending rest of environment
Fixes #1062, ESXi Driver supports PACKER_CACHE_DIR
Update README.md

Added other supported platforms
Uploading the whole ansible playbook directory