Move spring-webmvc dependency to where it's needed

Previously, spring-restdocs-core had a dependency on spring-webmvc however it only used classes from spring-web. This commit moves the spring-webmvc dependency from spring-restdocs-core to spring-restdocs-mockmvc where it's needed. It's now in the runtime scope (rather than compile) as it's not needed at compile time but is needed at runtime by the MockMvc support in spring-test. Closes gh-273

Author: wilkinsona

spring-restdocs-core/build.gradle

@@ -26,7 +26,7 @@ task jmustacheRepackJar(type: Jar) { repackJar ->
 
 dependencies {
 compile 'com.fasterxml.jackson.core:jackson-databind'
-compile 'org.springframework:spring-webmvc'
+compile 'org.springframework:spring-web'
 compile 'javax.servlet:javax.servlet-api'
 compile files(jmustacheRepackJar)
 jarjar 'com.googlecode.jarjar:jarjar:1.3'

spring-restdocs-mockmvc/build.gradle

@@ -4,6 +4,7 @@ dependencies {
 compile 'org.springframework:spring-test'
 compile project(':spring-restdocs-core')
 optional 'junit:junit'
+runtime 'org.springframework:spring-webmvc'
 
 testCompile 'org.mockito:mockito-core'
 testCompile 'org.hamcrest:hamcrest-library'