Add American Statistical Assocation journals metadata (#45)

Author: POBrien333

amstat/_journals.tab

@@ -0,0 +1,7 @@
+TITLE	TITLESHORT	ISSN	EISSN
+The American Statistician	TAS	0003-1305	1537-2731
+Journal of the American Statistical Association	JASA	0162-1459	1537-274X
+Journal of Business & Economic Statistics	JBES	0735-0015	1537-2707
+Journal of Computational and Graphical Statistics	JCGS	1061-8600	1537-2715
+Technometrics	x	0040-1706	1537-2723
+Statistics in Biopharmaceutical Research	SBR	x	1946-6315

amstat/_template.csl

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+<?xml version="1.0" encoding="utf-8"?>
+<style xmlns="http://purl.org/net/xbiblio/csl" version="1.0" default-locale="en-US">
+  <!-- #XML-COMMENT# -->
+  <info>
+    <title>#TITLE#</title>
+    <title-short>#TITLESHORT#</title-short>
+    <id>http://www.zotero.org/styles/#IDENTIFIER#</id>
+    <link href="http://www.zotero.org/styles/#IDENTIFIER#" rel="self"/>
+    <link href="http://www.zotero.org/styles/american-statistical-association" rel="independent-parent"/>
+    <link href="http://amstat.tfjournals.com/asa-style-guide/" rel="documentation"/>
+    <category citation-format="author-date"/>
+    <category field="math"/>
+    <issn>#ISSN#</issn>
+    <eissn>#EISSN#</eissn>
+    <updated>2017-07-26T12:00:00+00:00</updated>
+    <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
+  </info>
+</style>

publishers.json

@@ -7,6 +7,7 @@
     "aiaa": "American Institute of Aeronautics and Astronautics (AIAA)",
     "aip": "American Institute of Physics (AIP)",
     "ams": "American Meteorological Society (AMS)",
+    "amstat": "American Statistical Association",
     "annual-reviews": "Annual Reviews",
     "apa": "American Psychological Association (APA)",
     "aps": "American Physical Society (APS)",