Bring back load(path).

Author: rxin

sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala

@@ -114,6 +114,16 @@ class DataFrameReader private[sql](sqlContext: SQLContext) extends Logging {
     DataFrame(sqlContext, LogicalRelation(resolved.relation))
   }
 
+  /**
+   * Loads input in as a [[DataFrame]], for data sources that require a path (e.g. data backed by
+   * a local or distributed file system).
+   *
+   * @since 1.4.0
+   */
+  def load(path: String): DataFrame = {
+    option("path", path).load()
+  }
+
   /**
    * Loads input in as a [[DataFrame]], for data sources that support multiple paths.
    * Only works if the source is a HadoopFsRelationProvider.