Upgrading instructions (1.X to 2.X) in wiki is missing some information

[josketres]

Please add the following to the upgrading instructions in the wiki page in the section Upgrading from Pattern Lab 1.X to 2.X:

• in the file 00-meta/_00-head.mustache replace {% pattern-lab-head %} with {{{ patternLabHead }}}
• in the file 00-meta/_01-foot.mustache replace {% pattern-lab-foot %} with {{{ patternLabFoot }}}

It took me almost 1 hour reading the source-code to find out that this change was needed for the upgrade.

[bradfrost]

@josketres Thanks very much for this info! I've updated the docs to include these changes for both PHP and Node. @bmuenzenmeyer, feel free to adjust milestone accordingly or whatever you need to do.

[josketres]

Cool!
Are you also planning to add this info to the wiki (https://github.com/pattern-lab/patternlab-node/wiki/Upgrading)?
This is the documentation that I used for upgrading!

[bmuenzenmeyer]

I intend to update this too - since it contains additional information not present on the io site and people may find their way to it like you did.

[josketres]

👍

[bmuenzenmeyer]

I've updated the wiki to cover this, in addition to removing some confusing code