Add DRAFT Usergrid 2.1.0 deployment guide and upgrade website to use …

…Nanoc 4.

.gitignore

@@ -6,6 +6,7 @@ target
 # Icon must ends with two \r.
 Icon
 
+/website/tmp
 
 # Thumbnails
 ._*
@@ -89,4 +90,4 @@ sdks/dotnet/samples/notifications/packages/*
 
 
 /stack/rest_integration_tests/node_modules
-/stack/rest_integration_tests/config/override.js
+/stack/rest_integration_tests/config/override.js

content/community/index.html

@@ -403,7 +403,7 @@ <h2 class="icns-group" id="committers"><span>Committers</span></h2>
 				<p>George Reyes</p>
 			</div>
 			<div class="col-md-2 text-center">
-				<img src="/img/mike_d.jpg" />
+				<img src="/img/miked.jpg" />
 				<p>Mike Dunker</p>
 			</div>
 			<div class="col-md-2 text-center">

content/docs/_sources/data-queries/operators-and-types.txt

@@ -40,6 +40,11 @@ The following operators and data types are supported by the SQL-like query langu
         <td>Subtraction of results</td>
         <td>select * where quantity < '4000' and not quantity = '2000'</td>
     </tr>
+    <tr>
+        <td>contains</td>
+        <td>Narrow by contained text</td>
+        <td>select * where title contains 'tale'</td>
+    </tr>
     <tr>
         <td>and</td>
         <td>Union of results</td>
@@ -50,14 +55,24 @@ The following operators and data types are supported by the SQL-like query langu
         <td>Intersection of results</td>
         <td>select * where quantity = '1000' or quantity = '4000'</td>
     </tr>
-    <tr>
-        <td>contains</td>
-        <td>Narrow by contained text</td>
-        <td>select * where title contains 'tale'</td>
-    </tr>
 </table>
 
 
+### Precedence 
+
+The operators at the bottom of the above table are the ones with lower precedence. 
+When a query is evaluated the comparison operators (=, > , <, <= and >=) will be evaluated first.
+And next "not", "contains" and "or" will be evaluated and in that order.
+
+Though they are not shown above, parentheses are allowed and may be used to group query expressions.
+
+For example, given our rules of precedence, these two queries are equivalent:
+
+    select * where age > 6 or size = 'large' and color = 'tabby'
+
+    select * where (age > 6 or size = 'large') and color = 'tabby'
+
+
 ## Data types
 
 As you develop queries, remember that entity properties each conform to a particular data type. For example, in the default entity User, the name property is stored as a string, the created date as a long, and metadata is stored as a JSON object. Your queries must be data type-aware to ensure that query results are as you expect them to be.