compatibility fix

Tablet.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
     s.name                  = 'Tablet'
-    s.version               = '0.2.5'
+    s.version               = '0.2.6'
 
     s.homepage              = 'https://github.com/maxsokolov/tablet'
     s.summary               = 'Powerful type-safe tool for UITableView. Swift 2.0 is required.'

Tablet/TableRowBuilder.swift

@@ -56,14 +56,14 @@ public class TableRowBuilder<I, C where C: UITableViewCell> : RowBuilder {
         }
     }
     
-    public init(item: I, id: String? = nil, estimatedRowHeight: CGFloat) {
+    public init(item: I, id: String? = nil, estimatedRowHeight: CGFloat = 48) {
         
         reusableIdentifier = id ?? NSStringFromClass(C).componentsSeparatedByString(".").last ?? ""
         self.estimatedRowHeight = estimatedRowHeight
         items.append(item)
     }
     
-    public init(items: [I]? = nil, id: String? = nil, estimatedRowHeight: CGFloat) {
+    public init(items: [I]? = nil, id: String? = nil, estimatedRowHeight: CGFloat = 48) {
 
         reusableIdentifier = id ?? NSStringFromClass(C).componentsSeparatedByString(".").last ?? ""
         self.estimatedRowHeight = estimatedRowHeight
@@ -129,11 +129,11 @@ public class TableRowBuilder<I, C where C: UITableViewCell> : RowBuilder {
 */
 public class TableConfigurableRowBuilder<I, C: ConfigurableCell where C.Item == I, C: UITableViewCell> : TableRowBuilder<I, C> {
 
-    public init(item: I, estimatedRowHeight: CGFloat) {
+    public init(item: I, estimatedRowHeight: CGFloat = 48) {
         super.init(item: item, id: C.reusableIdentifier(), estimatedRowHeight: estimatedRowHeight)
     }
 
-    public init(items: [I]? = nil, estimatedRowHeight: CGFloat) {
+    public init(items: [I]? = nil, estimatedRowHeight: CGFloat = 48) {
         super.init(items: items, id: C.reusableIdentifier(), estimatedRowHeight: estimatedRowHeight)
     }