Removed --user to fix travis build

Travis output: $ pip install --user codecov Can not perform a '--user' install. User site-packages are not visible in this virtualenv.
codecov · Sep 3, 2017 · b9d3414 · b9d3414
1 parent 809d496
commit b9d3414
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -65,7 +65,7 @@ after_success:
 ```yaml
 # private repository on Travis CI
 install:
-  - pip install --user codecov
+  - pip install codecov
 # or
   - conda install -c conda-forge codecov
 after_success: