Merge pull request #461 from Zariel/update-go-version

bump to go14 and go15

.travis.yml

@@ -19,8 +19,8 @@ env:
     - CASS=2.1.5  AUTH=true
 
 go:
-  - 1.3
   - 1.4
+  - 1.5
 
 install:
   - pip install --user cql PyYAML six

README.md

@@ -17,10 +17,10 @@ Supported Versions
 
 The following matrix shows the versions of Go and Cassandra that are tested with the integration test suite as part of the CI build:
 
-Go/Cassandra | 1.2.19 | 2.0.14 | 2.1.5
+Go/Cassandra | 1.2.x | 2.0.x | 2.1.x
 -------------| -------| ------| ---------
-1.3  | yes | yes | yes
 1.4  | yes | yes | yes
+1.5  | yes | yes | yes
 
 
 Sunsetting Model
@@ -96,7 +96,7 @@ Example of incorrect usage:
 	}
 ```
 This will result in an err being returned from the session.Query line as the user is trying to execute a "use"
-statement. 
+statement.
 
 Example
 -------