First of all you need choose correct plugin library:

• Unity 4.6 require Build/UnityEditorConsuloPlugin4.6.dll
• Unity 5 require Build/UnityEditorConsuloPlugin5.dll
• Unity 5.3 (or highter) require Build/UnityEditorConsuloPlugin5.3.dll

And then copy it to Assets/Editor/Plugins directory.

And enable in Unity Editor via menu Edit/Use Consulo as External Editor

Required last Consulo & Unity plugin builds