doc: fix typos

[ci skip]

CHANGELOG.markdown

@@ -1,6 +1,6 @@
 # [rail](./README.markdown) ChangeLog
 
-## 2015-10-01, [v0.8.0](https://github.com/skenqbx/rail/tree/v0.8.0) **_<small>unstable</small>_**
+## 2015-10-02, [v0.8.0](https://github.com/skenqbx/rail/tree/v0.8.0) **_<small>unstable</small>_**
 
 ### Commits
 

README.markdown

@@ -106,11 +106,11 @@ var client = new RAIL({
   },
   // load & configure the buffer plugin
   buffer: {
-    default: true // buffer all repsonses by default
+    default: true // buffer all responses by default
   },
   // load & configure the json plugin
   json: {
-    auto: true // try to parse all reponses with content-type equal to application/json
+    auto: true // try to parse all responses with content-type equal to application/json
   },
   // load & configure the redirect plugin
   redirect: {
@@ -136,7 +136,7 @@ var call = client.call({
   } else if (response.buffer) {
     console.log(response.buffer.toString());
 
-  // ... or if a bailout happend (buffer max size exceeded)
+  // ... or if a bailout happened (buffer max size exceeded)
   } else if (response.buffer !== null) {
     // consume the response
     response.on('readable', function() { /* ... */ });

doc/api.markdown

@@ -223,7 +223,7 @@ _Copy_ all buffered chunks to `writable`.
 Empties the buffer and sets `replayBuffer.buffer` to `false`.
 
 ### replayBuffer.end()
-Prevents further additon of chunks and clear the writable stream.
+Prevents further addition of chunks and clear the writable stream.
 
 ### Event: 'end'
 Emitted when the buffer is ended. This is the last moment a can modify the request configuration.

doc/plugins.markdown

@@ -54,7 +54,7 @@ Uses the `buffer` plugin.
   - `{boolean} auto` Enable auto-parsing when `Content-Type: application/json`
   - `{number} max` The maximum JSON size, defaults to `1048576` (1 MiB)
 
-_Note_: When the JSON size exeeds the maximum size, it's not parsed. The `response.buffer` is still available for manual parsing, though.
+_Note_: When the JSON size exceeds the maximum size, it's not parsed. The `response.buffer` is still available for manual parsing, though.
 
 **request options**
 
@@ -96,7 +96,7 @@ Emitted when `request.end()` of a redirected request has been called.
 ## retry
 Conditional request retry.
 
-Retry requests on connect errors, on specfifc http status codes and failed repsonse [validation](#validate).
+Retry requests on connect errors, on specific http status codes and failed response [validation](#validate).
 
 **options**