Bump hadoop-client from 2.6.3 to 2.7.0 in /webindex (#31)

Bumps hadoop-client from 2.6.3 to 2.7.0.

---
updated-dependencies:
- dependency-name: org.apache.hadoop:hadoop-client
  dependency-type: direct:production
...

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diff --git a/webindex/pom.xml b/webindex/pom.xml
index bdd72b6..3765d83 100644
--- a/webindex/pom.xml
+++ b/webindex/pom.xml
@@ -38,7 +38,7 @@
     <accumulo.version>1.10.1</accumulo.version>
     <fluo-recipes.version>1.1.0-incubating</fluo-recipes.version>
     <fluo.version>1.2.0</fluo.version>
-    <hadoop.version>2.6.3</hadoop.version>
+    <hadoop.version>2.7.0</hadoop.version>
     <spark.version>1.6.2</spark.version>
   </properties>
   <dependencyManagement>