brianfrankcoopergh-97 Bug fixes in dynamodb plugin

I have fixed a bug in insert() and delete() methods.There are also
some cosmetic changes to readme and properties files.

.gitignore

@@ -1 +1 @@
-/elasticsearch/target/
+/elasticsearch/target/

bin/ycsb

@@ -40,7 +40,7 @@ DATABASES = {
     "nosqldb"      : "com.yahoo.ycsb.db.NoSqlDbClient",
     "orientdb"     : "com.yahoo.ycsb.db.OrientDBClient",
     "redis"        : "com.yahoo.ycsb.db.RedisClient", 
-    "voldemort"    : "com.yahoo.ycsb.db.VoldemortClient",
+    "voldemort"    : "com.yahoo.ycsb.db.VoldemortClient", 
 }
 
 OPTIONS = {

dynamodb/README

@@ -3,10 +3,13 @@ CONFIGURE
 YCSB_HOME - YCSB home directory
 DYNAMODB_HOME - Amazon DynamoDB package files
 
+Please refer to https://github.com/brianfrankcooper/YCSB/wiki/Using-the-Database-Libraries
+for more information on setup.
+
 BENCHMARK
 
-$YCSB_HOME/bin/ycsb load dynamodb -P worklaods/workloada -P dynamodb.properties
-$YCSB_HOME/bin/ycsb run dynamodb -P worklaods/workloada -P dynamodb.properties
+$YCSB_HOME/bin/ycsb load dynamodb -P workloads/workloada -P dynamodb.properties
+$YCSB_HOME/bin/ycsb run dynamodb -P workloads/workloada -P dynamodb.properties
 
 PROPERTIES
 

dynamodb/conf/dynamodb.properties

@@ -17,7 +17,7 @@
 #dynamodb.endpoint = http://dynamodb.us-east-1.amazonaws.com
 
 # Strongly recommended to set to uniform.Refer FAQs in README
-#requestdistribution = uniform 
+#requestdistribution = uniform
 
 # Enable/disable debug messages.Defaults to false
 # "true" or "false"

dynamodb/src/main/java/com/yahoo/ycsb/db/DynamoDBClient.java

@@ -200,7 +200,7 @@ public int scan(String table, String startkey, int recordcount,
             }
             startKey = res.getLastEvaluatedKey();
 
-        } 
+        }
 
         return OK;
     }
@@ -249,7 +249,7 @@ public int insert(String table, String key,HashMap<String, ByteIterator> values)
             logger.error(ex.getMessage());
             return CLIENT_ERROR;
         }
-        return res.getConsumedCapacityUnits().intValue();
+        return OK;
     }
 
     @Override
@@ -267,7 +267,7 @@ public int delete(String table, String key) {
             logger.error(ex.getMessage());
             return CLIENT_ERROR;
         }
-        return res.getConsumedCapacityUnits().intValue();
+        return OK;
     }
 
     private static Map<String, AttributeValue> createAttributes(