WordMap: pull request by twinword inc.

# Spice Pull Request Template

**What does your instant answer do?**
Generate semantically related words.

**What problem does your instant answer solve (Why is it better than organic links)?**
Twinword Word Map suggests better words to express what people had in mind for search.

**What is the data source for your instant answer? (Provide a link if possible)**
http://twinword.com 

**Why did you choose this data source?**
We, Twinword has a copyright. Also, most thesaurus or synonyms have only 4K ~ 8K words while Twinword has 19K words.

**Are there any other alternative (better) data sources?**
There are many thesaurus or dictionaries, but, for the word map, Twinword is the best.  

**What are some example queries that trigger this instant answer?**
similar to sound, words like sound, related to sound...

**Which communities will this instant answer be especially useful for? (gamers, book lovers, etc)**
Publishers, Marketers, Advertisers, English Learners, Planners, and General Users for keyword suggestion.

**Is this instant answer connected to an [Ideas.DuckDuckHack](https://duckduckhack.uservoice.com/forums/5168-ideas-for-duckduckgo-instant-answer-plugins) or [Duck.co](http://duck.co/) thread?**
No.

**Which existing instant answers will this one supersede/overlap with?**
Thesaurus or synonym.  

**Are you having any problems? Do you need our help with anything?**
Not yet.

**\*\*Note:** Please attach a screenshot for new instant answer pull requests, and for pull requests which modify the look/design of existing instant answers.


##Checklist
Please place a ✔ where appropriate.

```
[✔] Added metadata and attribution information
[✔] Wrote test file and added to t/ directory
[✔] Verified that instant answer adheres to design guidelines(https://github.com/duckduckgo/duckduckgo-documentation/blob/master/duckduckhack/styleguides/design_styleguide.md)
[✔] Tested cross-browser compatability

    Please let us know which browsers/devices you've tested on:
    - Windows 8
        [] Google Chrome   
        [] Firefox         
        [] Opera           
        [] IE 10           

    - Windows 7
        [] Google Chrome   
        [] Firefox         
        [] Opera           
        [] IE 8            
        [] IE 9            
        [] IE 10           

    - Windows XP
        [] IE 7            
        [] IE 8            

    - Mac OSX
        [✔] Google Chrome   
        [] Firefox         
        [] Opera           
        [✔] Safari          

    - iOS (iPhone)
        [] Safari Mobile   
        [] Google Chrome   
        [] Opera           

    - iOS (iPad)
        [] Safari Mobile   
        [] Google Chrome   
        [] Opera            

    - Android
        [] Firefox         
        [] Native Browser  
        [] Google Chrome   
        [] Opera
```