[Plasma] Blog post for Plasma

[asfimport]

As mentioned in ARROW-1163, we should have a blog post about Plasma, describing:

• The motivation and design of Plasma
• The API
• Some code examples on how to interact with it
• A longer example that shows the capabilities of Plasma. I'm thinking of a large multicore sort example in Python, any opinions?
• A call for contribution and possible future directions

Is there anything missing from this?

Reporter: Philipp Moritz / @pcmoritz
Assignee: Robert Nishihara / @robertnishihara

_{Note: This issue was originally created as ARROW-1173. Please see the migration documentation for further details.}

[asfimport]

Wes McKinney / @wesm:
Sounds good to me. After working on the packaging details in ARROW-1149 #797 it would be a good time, since Arrow 0.5.0 should not be far off (later this month)

[asfimport]

Wes McKinney / @wesm:
Issue resolved by pull request 940
#940

[asfimport]

Wes McKinney / @wesm:
Published on http://arrow.apache.org/blog/, thank you all!