Prepare for 2.1.0 release (#438)

* Prepare for 2.1.0 release

* Fix docs

CDTDatastore.podspec

@@ -14,7 +14,7 @@ EOT
 
 Pod::Spec.new do |s|
   s.name         = "CDTDatastore"
-  s.version      = "2.0.3"
+  s.version      = "2.1.0"
   s.summary      = "CDTDatastore is a document datastore which syncs."
   s.description  = <<-DESC
                     CDTDatastore is a JSON document datastore which speaks the

CDTDatastore/Version.h

@@ -1 +1 @@
-#define CLOUDANT_SYNC_VERSION "2.0.4-SNAPSHOT"
+#define CLOUDANT_SYNC_VERSION "2.1.0"

CHANGELOG.md

@@ -1,6 +1,6 @@
 # CDTDatastore CHANGELOG
 
-## Unreleased
+## 2.1.0 (2018-07-10)
 - [NEW] Add method `-closeDatastoreNamed:` on `CDTDatastoreManager`.
 - [FIXED] Fix issue where repeated calls to `-datastoreNamed:error:` on `CDTDatastoreManager` for
   the same datastore could cause crashes or failures.

doc/crud.md

@@ -68,9 +68,33 @@ let ds2 = try manager.datastoreNamed("other_datastore")
 
 These datastores are persisted to disk between application runs.
 
-The `CDTDatabaseManager` handles creating and initialising non-existent
+The `CDTDatastoreManager` handles creating and initialising non-existent
 datastores, so the object returned is ready for reading and writing.
 
+Calling `datastoreNamed` on an already open datastore will return the same reference to that
+datastore.
+
+Datastores are held open for as long as they are needed and are automatically closed when the
+`CDTDatastoreManager` is deallocated. This will typically happen at the end of the program or
+earlier (for instance if `autoreleasepool`s are used or the manager is explicitly set to `nil`).
+
+In applications which open large numbers of Datastores it may be necessary to explicitly close
+datastores after use to avoid exhaustion of file handles and other native resources.
+
+To close a datastore:
+
+Objective-C:
+
+```objc
+[manager closeDatastoreNamed:@"my_datastore"];
+```
+
+Swift:
+
+```swift
+manager.closeDatastoreNamed("my_datastore");
+```
+
 To delete a datastore and all associated data (i.e., attachments and
 extension data such as indexes (see [query.md](query.md)):