Specify specification support for v1.5 (#191)

Author: MasterOdin

tldr.py

@@ -18,7 +18,7 @@
 import shtab
 
 __version__ = "3.0.0"
-__client_specification__ = "1.4"
+__client_specification__ = "1.5"
 
 REQUEST_HEADERS = {'User-Agent': 'tldr-python-client'}
 PAGES_SOURCE_LOCATION = os.environ.get(