Spelling fixes (#1580)

doc/TUTORIAL.md

@@ -151,7 +151,7 @@ The following numbering explains what happens in the corresponding lines.
 
 1. All badges are preceded by a comment.
    This allows other developers to find the badge regardless of implementation.
-   Usally, badges with an similar topic have their implementation close to each other's.
+   Usually, badges with a similar topic have their implementation close to each other's.
 2. The [regular expression][regex] matches the path behind the host name in the URL, e.g. `img.shields.io`.
    ```
    /^\/docker\/automated\/([^\/]+)\/([^\/]+)\.(svg|png|gif|jpg|json)$/

service-tests/bower.js

@@ -59,7 +59,7 @@ t.create('licence for Invaild Package')
   .expectJSON({ name: 'bower', value: 'invalid' });
 
 
-t.create('Version label should be `no releases` if no offical version')
+t.create('Version label should be `no releases` if no official version')
   .get('/v/bootstrap.json')
   .intercept(nock => nock('https://libraries.io')
     .get('/api/bower/bootstrap')

service-tests/helpers/validators.js

@@ -49,7 +49,7 @@ const isPhpVersionReduction = withRegex(/^((>= \d+(\.\d+)?)|(\d+\.\d+(, \d+\.\d+
 
 const isStarRating = withRegex(/^(?=.{5}$)(\u2605{0,5}[\u00BC\u00BD\u00BE]?\u2606{0,5})$/);
 
-// Required to be > 0, beacuse accepting zero masks many problems.
+// Required to be > 0, because accepting zero masks many problems.
 const isMetric = withRegex(/^[1-9][0-9]*[kMGTPEZY]?$/);
 
 const isMetricOpenIssues = withRegex(/^[1-9][0-9]*[kMGTPEZY]? open$/);

service-tests/pypi.js

@@ -57,7 +57,7 @@ t.create('monthly downloads (invalid)')
   - 2.7.3.2
   - 2.0rc1
   - 0.1.30b10
-  are prefectly legal.
+  are perfectly legal.
 
   We'll run this test againt a project that follows SemVer...
 */