Fixed some issues based on Steven's review

Author: Yoshito Umaoka

README.md

@@ -43,7 +43,7 @@ To see available commands and options, please see [Globalization Pipeline CLI To
 
 ## Maven Plugin (gp-maven-plugin)
 
-This plugin integrates Globalization Pipeline service with Apache Maven build.
+This plugin integrates Globalization Pipeline service with an Apache Maven build.
 With the plugin, you can upload source resource bundles to your own Globalization
 Pipeline service instance, and download translated resource bundles.
 

gp-maven-plugin.md

@@ -80,7 +80,10 @@ in pom.xml.
 ### <a name="TOC-Usage-Credentials"></a>Specifying Globalization Pipeline Service Credentials
 
 The plugin requires *service instance administrator* credentials for a Globalization
-Pipeline service instance. There are two ways to specify the service credentials.
+Pipeline service instance. Please refer [Quick Start Guide](https://github.com/IBM-Bluemix/gp-common#quick-start-guide)
+to see how to get service credentials information of your Globalization Pipeline instance.
+
+There are two ways to specify the service credentials.
 
 #### JSON file
 
@@ -219,15 +222,15 @@ and `src/nls2/resources/en`. If you want to include both sets, use the configura
         <bundleSets>
             <bundleSet>
                 <sourceFiles>
-                    <direcotry>src/nls1/resources/en</directory>
+                    <directory>src/nls1/resources/en</directory>
                     <includes>
                         <include>**/*.properties</include>
                     </includes>
                 </sourceFiles>
             </bundleSet>
             <bundleSet>
                 <sourceFiles>
-                    <direcotry>src/nls2/resources/en</directory>
+                    <directory>src/nls2/resources/en</directory>
                     <includes>
                         <include>**/*.properties</include>
                     </includes>
@@ -249,7 +252,7 @@ as a part of output file name (or path). The following example does such mapping
         <bundleSets>
             <bundleSet>
                 <sourceFiles>
-                    <direcotry>src/resources</directory>
+                    <directory>src/resources</directory>
                     <includes>
                         <include>**/*.properties</include>
                     </includes>
@@ -287,7 +290,7 @@ versions in parallel language directories.
         <bundleSets>
             <bundleSet>
                 <sourceFiles>
-                    <direcotry>src/main/webapp</directory>
+                    <directory>src/main/webapp</directory>
                     <includes>
                         <include>**/en/*.json</include>
                     </includes>
@@ -445,11 +448,11 @@ target languages currently available in the Globalization Pipeline bundle.
 
 #### `<languageMap>`
 
-Specifies custom language mappings. Each nested element name is a BCP 47 language tag used by
-Globalization Pipeline service instance, and the element value is a language ID used for output
-resource file or path name. For example, Globalization Pipeline service uses language ID "pt-BR"
-for Brazilian Portuguese. If you want to use just "pt" for output file or path name, you can
-specify the mapping as below.
+Specifies custom language mappings. Each nested element name is a [BCP 47 language tag](https://tools.ietf.org/html/bcp47)
+used by Globalization Pipeline service instance, and the element value is a language ID used for
+output resource file or path name. For example, Globalization Pipeline service uses language ID
+"pt-BR" for Brazilian Portuguese. If you want to use just "pt" for output file or path name, you
+can specify the mapping as below.
 
 ```
     <languageMap>