encoders as namespaces

Change-Id: I992fae12d89e4e156015bb5660d02932b32c57b6
diff --git a/src/detail/info-encoder.cpp b/src/detail/info-encoder.cpp
index 8a40bd7..0a26f8a 100644
--- a/src/detail/info-encoder.cpp
+++ b/src/detail/info-encoder.cpp
@@ -24,7 +24,7 @@
 namespace ndncert {
 
 Block
-InfoEncoder::encodeDataContent(const CaProfile& caConfig, const security::Certificate& certificate)
+infoEncoder::encodeDataContent(const CaProfile& caConfig, const security::Certificate& certificate)
 {
   auto content = makeEmptyBlock(ndn::tlv::Content);
   content.push_back(makeNestedBlock(tlv::CaPrefix, caConfig.m_caPrefix));
@@ -46,7 +46,7 @@
 }
 
 CaProfile
-InfoEncoder::decodeDataContent(const Block& block)
+infoEncoder::decodeDataContent(const Block& block)
 {
   CaProfile result;
   block.parse();