refactor: Migrate save verb into its own DSL file

The `case object save` was previously located into the
`SynonymsDsl.scala` file. However, it was responsible for both synonyms
and rules handling.

This commit moves the entire `case object save` into its own
`SaveDsl.scala` file, like what we already have for existing common verb
such as `get` (`GetDsl.scala`), `list` (`ListDsl.scala`), etc.

src/main/scala/algolia/AlgoliaDsl.scala

@@ -37,7 +37,7 @@ import scala.util.matching.Regex
 trait AlgoliaDsl
     extends Object //Just to have all trait DSL ordered `with`
     with KeyDefinitionDsl
-    with dsl.BatchDsl
+    with BatchDsl
     with BrowseDsl
     with ClearDsl
     with CopyDsl
@@ -52,6 +52,7 @@ trait AlgoliaDsl
     with MultiQueriesDefinitionDsl
     with PartialUpdateObjectDsl
     with RulesDsl
+    with SaveDsl
     with SearchDsl
     with SynonymsDsl
     with WaitForTaskDsl

src/main/scala/algolia/dsl/SaveDsl.scala

@@ -0,0 +1,52 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Algolia
+ * http://www.algolia.com/
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package algolia.dsl
+
+import algolia.definitions._
+import algolia.objects.{AbstractSynonym, Rule}
+import org.json4s.Formats
+
+trait SaveDsl {
+
+  implicit val formats: Formats
+
+  object save {
+
+    def synonym(synonym: AbstractSynonym) =
+      SaveSynonymDefinition(synonym = synonym)
+
+    def synonyms(synonyms: Iterable[AbstractSynonym]) =
+      BatchSynonymsDefinition(synonyms = synonyms)
+
+    def rule(rule: Rule) =
+      SaveRuleDefinition(rule = rule)
+
+    def rules(rules: Iterable[Rule]) =
+      BatchRulesDefinition(rules = rules)
+
+  }
+
+}

src/main/scala/algolia/dsl/SynonymsDsl.scala

@@ -37,22 +37,6 @@ trait SynonymsDsl {
 
   implicit val formats: Formats
 
-  object save {
-
-    def synonym(synonym: AbstractSynonym) =
-      SaveSynonymDefinition(synonym = synonym)
-
-    def synonyms(synonyms: Iterable[AbstractSynonym]) =
-      BatchSynonymsDefinition(synonyms = synonyms)
-
-    def rule(rule: Rule) =
-      SaveRuleDefinition(rule = rule)
-
-    def rules(rules: Iterable[Rule]) =
-      BatchRulesDefinition(rules = rules)
-
-  }
-
   implicit object GetSynonymDefinitionExecutable
       extends Executable[GetSynonymDefinition, AbstractSynonym] {