Merge remote-tracking branch 'origin/master' into ctx_objects_as_well

# Conflicts:
#	README.md
#	src/main/java/org/dataloader/BatchLoaderEnvironment.java
#	src/main/java/org/dataloader/DataLoader.java
#	src/main/java/org/dataloader/DataLoaderHelper.java
#	src/main/java/org/dataloader/DataLoaderOptions.java
#	src/test/java/ReadmeExamples.java
#	src/test/java/org/dataloader/DataLoaderBatchLoaderEnvironmentTest.java

Author: bbakerman

src/main/java/org/dataloader/BatchLoaderEnvironmentProvider.java

@@ -0,0 +1,14 @@
+package org.dataloader;
+
+/**
+ * A BatchLoaderEnvironmentProvider is used by the {@link org.dataloader.DataLoader} code to
+ * provide {@link org.dataloader.BatchLoaderEnvironment} calling context to
+ * the {@link org.dataloader.BatchLoader} call.  A common use
+ * case is for propagating user security credentials or database connection parameters.
+ */
+public interface BatchLoaderEnvironmentProvider {
+    /**
+     * @return a {@link org.dataloader.BatchLoaderEnvironment} that may be needed in batch calls
+     */
+    BatchLoaderEnvironment get();
+}